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drivers-5.10-2020-10-12 

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Merge tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
 "Here are the driver updates for 5.10.

  A few SCSI updates in here too, in coordination with Martin as they
  depend on core block changes for the shared tag bitmap.

  This contains:

   - NVMe pull requests via Christoph:
      - fix keep alive timer modification (Amit Engel)
      - order the PCI ID list more sensibly (Andy Shevchenko)
      - cleanup the open by controller helper (Chaitanya Kulkarni)
      - use an xarray for the CSE log lookup (Chaitanya Kulkarni)
      - support ZNS in nvmet passthrough mode (Chaitanya Kulkarni)
      - fix nvme_ns_report_zones (Christoph Hellwig)
      - add a sanity check to nvmet-fc (James Smart)
      - fix interrupt allocation when too many polled queues are
        specified (Jeffle Xu)
      - small nvmet-tcp optimization (Mark Wunderlich)
      - fix a controller refcount leak on init failure (Chaitanya
        Kulkarni)
      - misc cleanups (Chaitanya Kulkarni)
      - major refactoring of the scanning code (Christoph Hellwig)

   - MD updates via Song:
      - Bug fixes in bitmap code, from Zhao Heming
      - Fix a work queue check, from Guoqing Jiang
      - Fix raid5 oops with reshape, from Song Liu
      - Clean up unused code, from Jason Yan
      - Discard improvements, from Xiao Ni
      - raid5/6 page offset support, from Yufen Yu

   - Shared tag bitmap for SCSI/hisi_sas/null_blk (John, Kashyap,
     Hannes)

   - null_blk open/active zone limit support (Niklas)

   - Set of bcache updates (Coly, Dongsheng, Qinglang)"

* tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (78 commits)
  md/raid5: fix oops during stripe resizing
  md/bitmap: fix memory leak of temporary bitmap
  md: fix the checking of wrong work queue
  md/bitmap: md_bitmap_get_counter returns wrong blocks
  md/bitmap: md_bitmap_read_sb uses wrong bitmap blocks
  md/raid0: remove unused function is_io_in_chunk_boundary()
  nvme-core: remove extra condition for vwc
  nvme-core: remove extra variable
  nvme: remove nvme_identify_ns_list
  nvme: refactor nvme_validate_ns
  nvme: move nvme_validate_ns
  nvme: query namespace identifiers before adding the namespace
  nvme: revalidate zone bitmaps in nvme_update_ns_info
  nvme: remove nvme_update_formats
  nvme: update the known admin effects
  nvme: set the queue limits in nvme_update_ns_info
  nvme: remove the 0 lba_shift check in nvme_update_ns_info
  nvme: clean up the check for too large logic block sizes
  nvme: freeze the queue over ->lba_shift updates
  nvme: factor out a nvme_configure_metadata helper
  ...
zero-sugar-mainline-defconfig
Linus Torvalds 2020-10-13 13:04:41 -07:00
parent 79ec6d9cac 79cd16681a
commit 7cd4ecd917
58 changed files with 2115 additions and 1293 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
block/scsi_ioctl.c
View File

@ -644,7 +644,7 @@ struct compat_cdrom_generic_command {
unsigned char pad[3];
compat_int_t quiet;
compat_int_t timeout;
compat_caddr_t reserved[1];
compat_caddr_t unused;
};
#endif
@ -666,7 +666,7 @@ static int scsi_get_cdrom_generic_arg(struct cdrom_generic_command *cgc,
.data_direction = cgc32.data_direction,
.quiet = cgc32.quiet,
.timeout = cgc32.timeout,
.reserved[0] = compat_ptr(cgc32.reserved[0]),
.unused = compat_ptr(cgc32.unused),
};
memcpy(&cgc->cmd, &cgc32.cmd, CDROM_PACKET_SIZE);
return 0;
@ -691,7 +691,7 @@ static int scsi_put_cdrom_generic_arg(const struct cdrom_generic_command *cgc,
.data_direction = cgc->data_direction,
.quiet = cgc->quiet,
.timeout = cgc->timeout,
.reserved[0] = (uintptr_t)(cgc->reserved[0]),
.unused = (uintptr_t)(cgc->unused),
};
memcpy(&cgc32.cmd, &cgc->cmd, CDROM_PACKET_SIZE);

72
crypto/async_tx/async_pq.c
View File

@ -104,7 +104,7 @@ do_async_gen_syndrome(struct dma_chan *chan,
* do_sync_gen_syndrome - synchronously calculate a raid6 syndrome
*/
static void
do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
do_sync_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks,
size_t len, struct async_submit_ctl *submit)
{
void **srcs;
@ -121,7 +121,8 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
BUG_ON(i > disks - 3); /* P or Q can't be zero */
srcs[i] = (void*)raid6_empty_zero_page;
} else {
srcs[i] = page_address(blocks[i]) + offset;
srcs[i] = page_address(blocks[i]) + offsets[i];
if (i < disks - 2) {
stop = i;
if (start == -1)
@ -138,10 +139,23 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
async_tx_sync_epilog(submit);
}
static inline bool
is_dma_pq_aligned_offs(struct dma_device *dev, unsigned int *offs,
int src_cnt, size_t len)
{
int i;
for (i = 0; i < src_cnt; i++) {
if (!is_dma_pq_aligned(dev, offs[i], 0, len))
return false;
}
return true;
}
/**
* async_gen_syndrome - asynchronously calculate a raid6 syndrome
* @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1
* @offset: common offset into each block (src and dest) to start transaction
* @offsets: offset array into each block (src and dest) to start transaction
* @disks: number of blocks (including missing P or Q, see below)
* @len: length of operation in bytes
* @submit: submission/completion modifiers
@ -160,7 +174,7 @@ do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
* path.
*/
struct dma_async_tx_descriptor *
async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
async_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks,
size_t len, struct async_submit_ctl *submit)
{
int src_cnt = disks - 2;
@ -179,7 +193,7 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
if (unmap && !(submit->flags & ASYNC_TX_PQ_XOR_DST) &&
(src_cnt <= dma_maxpq(device, 0) ||
dma_maxpq(device, DMA_PREP_CONTINUE) > 0) &&
is_dma_pq_aligned(device, offset, 0, len)) {
is_dma_pq_aligned_offs(device, offsets, disks, len)) {
struct dma_async_tx_descriptor *tx;
enum dma_ctrl_flags dma_flags = 0;
unsigned char coefs[MAX_DISKS];
@ -196,8 +210,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
for (i = 0, j = 0; i < src_cnt; i++) {
if (blocks[i] == NULL)
continue;
unmap->addr[j] = dma_map_page(device->dev, blocks[i], offset,
len, DMA_TO_DEVICE);
unmap->addr[j] = dma_map_page(device->dev, blocks[i],
offsets[i], len, DMA_TO_DEVICE);
coefs[j] = raid6_gfexp[i];
unmap->to_cnt++;
j++;
@ -210,7 +224,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
unmap->bidi_cnt++;
if (P(blocks, disks))
unmap->addr[j++] = dma_map_page(device->dev, P(blocks, disks),
offset, len, DMA_BIDIRECTIONAL);
P(offsets, disks),
len, DMA_BIDIRECTIONAL);
else {
unmap->addr[j++] = 0;
dma_flags |= DMA_PREP_PQ_DISABLE_P;
@ -219,7 +234,8 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
unmap->bidi_cnt++;
if (Q(blocks, disks))
unmap->addr[j++] = dma_map_page(device->dev, Q(blocks, disks),
offset, len, DMA_BIDIRECTIONAL);
Q(offsets, disks),
len, DMA_BIDIRECTIONAL);
else {
unmap->addr[j++] = 0;
dma_flags |= DMA_PREP_PQ_DISABLE_Q;
@ -240,13 +256,13 @@ async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,
if (!P(blocks, disks)) {
P(blocks, disks) = pq_scribble_page;
BUG_ON(len + offset > PAGE_SIZE);
P(offsets, disks) = 0;
}
if (!Q(blocks, disks)) {
Q(blocks, disks) = pq_scribble_page;
BUG_ON(len + offset > PAGE_SIZE);
Q(offsets, disks) = 0;
}
do_sync_gen_syndrome(blocks, offset, disks, len, submit);
do_sync_gen_syndrome(blocks, offsets, disks, len, submit);
return NULL;
}
@ -270,6 +286,7 @@ pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, si
* @len: length of operation in bytes
* @pqres: on val failure SUM_CHECK_P_RESULT and/or SUM_CHECK_Q_RESULT are set
* @spare: temporary result buffer for the synchronous case
* @s_off: spare buffer page offset
* @submit: submission / completion modifiers
*
* The same notes from async_gen_syndrome apply to the 'blocks',
@ -278,9 +295,9 @@ pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, si
* specified.
*/
struct dma_async_tx_descriptor *
async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
async_syndrome_val(struct page **blocks, unsigned int *offsets, int disks,
size_t len, enum sum_check_flags *pqres, struct page *spare,
struct async_submit_ctl *submit)
unsigned int s_off, struct async_submit_ctl *submit)
{
struct dma_chan *chan = pq_val_chan(submit, blocks, disks, len);
struct dma_device *device = chan ? chan->device : NULL;
@ -295,7 +312,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
unmap = dmaengine_get_unmap_data(device->dev, disks, GFP_NOWAIT);
if (unmap && disks <= dma_maxpq(device, 0) &&
is_dma_pq_aligned(device, offset, 0, len)) {
is_dma_pq_aligned_offs(device, offsets, disks, len)) {
struct device *dev = device->dev;
dma_addr_t pq[2];
int i, j = 0, src_cnt = 0;
@ -307,7 +324,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
for (i = 0; i < disks-2; i++)
if (likely(blocks[i])) {
unmap->addr[j] = dma_map_page(dev, blocks[i],
offset, len,
offsets[i], len,
DMA_TO_DEVICE);
coefs[j] = raid6_gfexp[i];
unmap->to_cnt++;
@ -320,7 +337,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
dma_flags |= DMA_PREP_PQ_DISABLE_P;
} else {
pq[0] = dma_map_page(dev, P(blocks, disks),
offset, len,
P(offsets, disks), len,
DMA_TO_DEVICE);
unmap->addr[j++] = pq[0];
unmap->to_cnt++;
@ -330,7 +347,7 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
dma_flags |= DMA_PREP_PQ_DISABLE_Q;
} else {
pq[1] = dma_map_page(dev, Q(blocks, disks),
offset, len,
Q(offsets, disks), len,
DMA_TO_DEVICE);
unmap->addr[j++] = pq[1];
unmap->to_cnt++;
@ -355,7 +372,9 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
async_tx_submit(chan, tx, submit);
} else {
struct page *p_src = P(blocks, disks);
unsigned int p_off = P(offsets, disks);
struct page *q_src = Q(blocks, disks);
unsigned int q_off = Q(offsets, disks);
enum async_tx_flags flags_orig = submit->flags;
dma_async_tx_callback cb_fn_orig = submit->cb_fn;
void *scribble = submit->scribble;
@ -381,27 +400,32 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
if (p_src) {
init_async_submit(submit, ASYNC_TX_XOR_ZERO_DST, NULL,
NULL, NULL, scribble);
tx = async_xor(spare, blocks, offset, disks-2, len, submit);
tx = async_xor_offs(spare, s_off,
blocks, offsets, disks-2, len, submit);
async_tx_quiesce(&tx);
p = page_address(p_src) + offset;
s = page_address(spare) + offset;
p = page_address(p_src) + p_off;
s = page_address(spare) + s_off;
*pqres |= !!memcmp(p, s, len) << SUM_CHECK_P;
}
if (q_src) {
P(blocks, disks) = NULL;
Q(blocks, disks) = spare;
Q(offsets, disks) = s_off;
init_async_submit(submit, 0, NULL, NULL, NULL, scribble);
tx = async_gen_syndrome(blocks, offset, disks, len, submit);
tx = async_gen_syndrome(blocks, offsets, disks,
len, submit);
async_tx_quiesce(&tx);
q = page_address(q_src) + offset;
s = page_address(spare) + offset;
q = page_address(q_src) + q_off;
s = page_address(spare) + s_off;
*pqres |= !!memcmp(q, s, len) << SUM_CHECK_Q;
}
/* restore P, Q and submit */
P(blocks, disks) = p_src;
P(offsets, disks) = p_off;
Q(blocks, disks) = q_src;
Q(offsets, disks) = q_off;
submit->cb_fn = cb_fn_orig;
submit->cb_param = cb_param_orig;

163
crypto/async_tx/async_raid6_recov.c
View File

@ -15,8 +15,9 @@
#include <linux/dmaengine.h>
static struct dma_async_tx_descriptor *
async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
size_t len, struct async_submit_ctl *submit)
async_sum_product(struct page *dest, unsigned int d_off,
struct page **srcs, unsigned int *src_offs, unsigned char *coef,
size_t len, struct async_submit_ctl *submit)
{
struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ,
&dest, 1, srcs, 2, len);
@ -37,11 +38,14 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
if (submit->flags & ASYNC_TX_FENCE)
dma_flags |= DMA_PREP_FENCE;
unmap->addr[0] = dma_map_page(dev, srcs[0], 0, len, DMA_TO_DEVICE);
unmap->addr[1] = dma_map_page(dev, srcs[1], 0, len, DMA_TO_DEVICE);
unmap->addr[0] = dma_map_page(dev, srcs[0], src_offs[0],
len, DMA_TO_DEVICE);
unmap->addr[1] = dma_map_page(dev, srcs[1], src_offs[1],
len, DMA_TO_DEVICE);
unmap->to_cnt = 2;
unmap->addr[2] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL);
unmap->addr[2] = dma_map_page(dev, dest, d_off,
len, DMA_BIDIRECTIONAL);
unmap->bidi_cnt = 1;
/* engine only looks at Q, but expects it to follow P */
pq[1] = unmap->addr[2];
@ -66,9 +70,9 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
async_tx_quiesce(&submit->depend_tx);
amul = raid6_gfmul[coef[0]];
bmul = raid6_gfmul[coef[1]];
a = page_address(srcs[0]);
b = page_address(srcs[1]);
c = page_address(dest);
a = page_address(srcs[0]) + src_offs[0];
b = page_address(srcs[1]) + src_offs[1];
c = page_address(dest) + d_off;
while (len--) {
ax = amul[*a++];
@ -80,8 +84,9 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
}
static struct dma_async_tx_descriptor *
async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
struct async_submit_ctl *submit)
async_mult(struct page *dest, unsigned int d_off, struct page *src,
unsigned int s_off, u8 coef, size_t len,
struct async_submit_ctl *submit)
{
struct dma_chan *chan = async_tx_find_channel(submit, DMA_PQ,
&dest, 1, &src, 1, len);
@ -101,9 +106,11 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
if (submit->flags & ASYNC_TX_FENCE)
dma_flags |= DMA_PREP_FENCE;
unmap->addr[0] = dma_map_page(dev, src, 0, len, DMA_TO_DEVICE);
unmap->addr[0] = dma_map_page(dev, src, s_off,
len, DMA_TO_DEVICE);
unmap->to_cnt++;
unmap->addr[1] = dma_map_page(dev, dest, 0, len, DMA_BIDIRECTIONAL);
unmap->addr[1] = dma_map_page(dev, dest, d_off,
len, DMA_BIDIRECTIONAL);
dma_dest[1] = unmap->addr[1];
unmap->bidi_cnt++;
unmap->len = len;
@ -133,8 +140,8 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
*/
async_tx_quiesce(&submit->depend_tx);
qmul = raid6_gfmul[coef];
d = page_address(dest);
s = page_address(src);
d = page_address(dest) + d_off;
s = page_address(src) + s_off;
while (len--)
*d++ = qmul[*s++];
@ -144,11 +151,14 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
static struct dma_async_tx_descriptor *
__2data_recov_4(int disks, size_t bytes, int faila, int failb,
struct page **blocks, struct async_submit_ctl *submit)
struct page **blocks, unsigned int *offs,
struct async_submit_ctl *submit)
{
struct dma_async_tx_descriptor *tx = NULL;
struct page *p, *q, *a, *b;
unsigned int p_off, q_off, a_off, b_off;
struct page *srcs[2];
unsigned int src_offs[2];
unsigned char coef[2];
enum async_tx_flags flags = submit->flags;
dma_async_tx_callback cb_fn = submit->cb_fn;
@ -156,26 +166,34 @@ __2data_recov_4(int disks, size_t bytes, int faila, int failb,
void *scribble = submit->scribble;
p = blocks[disks-2];
p_off = offs[disks-2];
q = blocks[disks-1];
q_off = offs[disks-1];
a = blocks[faila];
a_off = offs[faila];
b = blocks[failb];
b_off = offs[failb];
/* in the 4 disk case P + Pxy == P and Q + Qxy == Q */
/* Dx = A*(P+Pxy) + B*(Q+Qxy) */
srcs[0] = p;
src_offs[0] = p_off;
srcs[1] = q;
src_offs[1] = q_off;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(b, srcs, coef, bytes, submit);
tx = async_sum_product(b, b_off, srcs, src_offs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
srcs[0] = p;
src_offs[0] = p_off;
srcs[1] = b;
src_offs[1] = b_off;
init_async_submit(submit, flags | ASYNC_TX_XOR_ZERO_DST, tx, cb_fn,
cb_param, scribble);
tx = async_xor(a, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(a, a_off, srcs, src_offs, 2, bytes, submit);
return tx;
@ -183,11 +201,14 @@ __2data_recov_4(int disks, size_t bytes, int faila, int failb,
static struct dma_async_tx_descriptor *
__2data_recov_5(int disks, size_t bytes, int faila, int failb,
struct page **blocks, struct async_submit_ctl *submit)
struct page **blocks, unsigned int *offs,
struct async_submit_ctl *submit)
{
struct dma_async_tx_descriptor *tx = NULL;
struct page *p, *q, *g, *dp, *dq;
unsigned int p_off, q_off, g_off, dp_off, dq_off;
struct page *srcs[2];
unsigned int src_offs[2];
unsigned char coef[2];
enum async_tx_flags flags = submit->flags;
dma_async_tx_callback cb_fn = submit->cb_fn;
@ -208,60 +229,77 @@ __2data_recov_5(int disks, size_t bytes, int faila, int failb,
BUG_ON(good_srcs > 1);
p = blocks[disks-2];
p_off = offs[disks-2];
q = blocks[disks-1];
q_off = offs[disks-1];
g = blocks[good];
g_off = offs[good];
/* Compute syndrome with zero for the missing data pages
* Use the dead data pages as temporary storage for delta p and
* delta q
*/
dp = blocks[faila];
dp_off = offs[faila];
dq = blocks[failb];
dq_off = offs[failb];
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_memcpy(dp, g, 0, 0, bytes, submit);
tx = async_memcpy(dp, g, dp_off, g_off, bytes, submit);
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit);
tx = async_mult(dq, dq_off, g, g_off,
raid6_gfexp[good], bytes, submit);
/* compute P + Pxy */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = p;
src_offs[1] = p_off;
init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
NULL, NULL, scribble);
tx = async_xor(dp, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit);
/* compute Q + Qxy */
srcs[0] = dq;
src_offs[0] = dq_off;
srcs[1] = q;
src_offs[1] = q_off;
init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
NULL, NULL, scribble);
tx = async_xor(dq, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit);
/* Dx = A*(P+Pxy) + B*(Q+Qxy) */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = dq;
src_offs[1] = dq_off;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(dq, srcs, coef, bytes, submit);
tx = async_sum_product(dq, dq_off, srcs, src_offs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = dq;
src_offs[1] = dq_off;
init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn,
cb_param, scribble);
tx = async_xor(dp, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit);
return tx;
}
static struct dma_async_tx_descriptor *
__2data_recov_n(int disks, size_t bytes, int faila, int failb,
struct page **blocks, struct async_submit_ctl *submit)
struct page **blocks, unsigned int *offs,
struct async_submit_ctl *submit)
{
struct dma_async_tx_descriptor *tx = NULL;
struct page *p, *q, *dp, *dq;
unsigned int p_off, q_off, dp_off, dq_off;
struct page *srcs[2];
unsigned int src_offs[2];
unsigned char coef[2];
enum async_tx_flags flags = submit->flags;
dma_async_tx_callback cb_fn = submit->cb_fn;
@ -269,56 +307,74 @@ __2data_recov_n(int disks, size_t bytes, int faila, int failb,
void *scribble = submit->scribble;
p = blocks[disks-2];
p_off = offs[disks-2];
q = blocks[disks-1];
q_off = offs[disks-1];
/* Compute syndrome with zero for the missing data pages
* Use the dead data pages as temporary storage for
* delta p and delta q
*/
dp = blocks[faila];
dp_off = offs[faila];
blocks[faila] = NULL;
blocks[disks-2] = dp;
offs[disks-2] = dp_off;
dq = blocks[failb];
dq_off = offs[failb];
blocks[failb] = NULL;
blocks[disks-1] = dq;
offs[disks-1] = dq_off;
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_gen_syndrome(blocks, 0, disks, bytes, submit);
tx = async_gen_syndrome(blocks, offs, disks, bytes, submit);
/* Restore pointer table */
blocks[faila] = dp;
offs[faila] = dp_off;
blocks[failb] = dq;
offs[failb] = dq_off;
blocks[disks-2] = p;
offs[disks-2] = p_off;
blocks[disks-1] = q;
offs[disks-1] = q_off;
/* compute P + Pxy */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = p;
src_offs[1] = p_off;
init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
NULL, NULL, scribble);
tx = async_xor(dp, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit);
/* compute Q + Qxy */
srcs[0] = dq;
src_offs[0] = dq_off;
srcs[1] = q;
src_offs[1] = q_off;
init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
NULL, NULL, scribble);
tx = async_xor(dq, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit);
/* Dx = A*(P+Pxy) + B*(Q+Qxy) */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = dq;
src_offs[1] = dq_off;
coef[0] = raid6_gfexi[failb-faila];
coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_sum_product(dq, srcs, coef, bytes, submit);
tx = async_sum_product(dq, dq_off, srcs, src_offs, coef, bytes, submit);
/* Dy = P+Pxy+Dx */
srcs[0] = dp;
src_offs[0] = dp_off;
srcs[1] = dq;
src_offs[1] = dq_off;
init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn,
cb_param, scribble);
tx = async_xor(dp, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dp, dp_off, srcs, src_offs, 2, bytes, submit);
return tx;
}
@ -330,11 +386,13 @@ __2data_recov_n(int disks, size_t bytes, int faila, int failb,
* @faila: first failed drive index
* @failb: second failed drive index
* @blocks: array of source pointers where the last two entries are p and q
* @offs: array of offset for pages in blocks
* @submit: submission/completion modifiers
*/
struct dma_async_tx_descriptor *
async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
struct page **blocks, struct async_submit_ctl *submit)
struct page **blocks, unsigned int *offs,
struct async_submit_ctl *submit)
{
void *scribble = submit->scribble;
int non_zero_srcs, i;
@ -358,7 +416,7 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
if (blocks[i] == NULL)
ptrs[i] = (void *) raid6_empty_zero_page;
else
ptrs[i] = page_address(blocks[i]);
ptrs[i] = page_address(blocks[i]) + offs[i];
raid6_2data_recov(disks, bytes, faila, failb, ptrs);
@ -383,16 +441,19 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
* explicitly handle the special case of a 4 disk array with
* both data disks missing.
*/
return __2data_recov_4(disks, bytes, faila, failb, blocks, submit);
return __2data_recov_4(disks, bytes, faila, failb,
blocks, offs, submit);
case 3:
/* dma devices do not uniformly understand a single
* source pq operation (in contrast to the synchronous
* case), so explicitly handle the special case of a 5 disk
* array with 2 of 3 data disks missing.
*/
return __2data_recov_5(disks, bytes, faila, failb, blocks, submit);
return __2data_recov_5(disks, bytes, faila, failb,
blocks, offs, submit);
default:
return __2data_recov_n(disks, bytes, faila, failb, blocks, submit);
return __2data_recov_n(disks, bytes, faila, failb,
blocks, offs, submit);
}
}
EXPORT_SYMBOL_GPL(async_raid6_2data_recov);
@ -403,14 +464,17 @@ EXPORT_SYMBOL_GPL(async_raid6_2data_recov);
* @bytes: block size
* @faila: failed drive index
* @blocks: array of source pointers where the last two entries are p and q
* @offs: array of offset for pages in blocks
* @submit: submission/completion modifiers
*/
struct dma_async_tx_descriptor *
async_raid6_datap_recov(int disks, size_t bytes, int faila,
struct page **blocks, struct async_submit_ctl *submit)
struct page **blocks, unsigned int *offs,
struct async_submit_ctl *submit)
{
struct dma_async_tx_descriptor *tx = NULL;
struct page *p, *q, *dq;
unsigned int p_off, q_off, dq_off;
u8 coef;
enum async_tx_flags flags = submit->flags;
dma_async_tx_callback cb_fn = submit->cb_fn;
@ -418,6 +482,7 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
void *scribble = submit->scribble;
int good_srcs, good, i;
struct page *srcs[2];
unsigned int src_offs[2];
pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes);
@ -434,7 +499,7 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
if (blocks[i] == NULL)
ptrs[i] = (void*)raid6_empty_zero_page;
else
ptrs[i] = page_address(blocks[i]);
ptrs[i] = page_address(blocks[i]) + offs[i];
raid6_datap_recov(disks, bytes, faila, ptrs);
@ -458,55 +523,67 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
BUG_ON(good_srcs == 0);
p = blocks[disks-2];
p_off = offs[disks-2];
q = blocks[disks-1];
q_off = offs[disks-1];
/* Compute syndrome with zero for the missing data page
* Use the dead data page as temporary storage for delta q
*/
dq = blocks[faila];
dq_off = offs[faila];
blocks[faila] = NULL;
blocks[disks-1] = dq;
offs[disks-1] = dq_off;
/* in the 4-disk case we only need to perform a single source
* multiplication with the one good data block.
*/
if (good_srcs == 1) {
struct page *g = blocks[good];
unsigned int g_off = offs[good];
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
scribble);
tx = async_memcpy(p, g, 0, 0, bytes, submit);
tx = async_memcpy(p, g, p_off, g_off, bytes, submit);
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
scribble);
tx = async_mult(dq, g, raid6_gfexp[good], bytes, submit);
tx = async_mult(dq, dq_off, g, g_off,
raid6_gfexp[good], bytes, submit);
} else {
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL,
scribble);
tx = async_gen_syndrome(blocks, 0, disks, bytes, submit);
tx = async_gen_syndrome(blocks, offs, disks, bytes, submit);
}
/* Restore pointer table */
blocks[faila] = dq;
offs[faila] = dq_off;
blocks[disks-1] = q;
offs[disks-1] = q_off;
/* calculate g^{-faila} */
coef = raid6_gfinv[raid6_gfexp[faila]];
srcs[0] = dq;
src_offs[0] = dq_off;
srcs[1] = q;
src_offs[1] = q_off;
init_async_submit(submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
NULL, NULL, scribble);
tx = async_xor(dq, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(dq, dq_off, srcs, src_offs, 2, bytes, submit);
init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
tx = async_mult(dq, dq, coef, bytes, submit);
tx = async_mult(dq, dq_off, dq, dq_off, coef, bytes, submit);
srcs[0] = p;
src_offs[0] = p_off;
srcs[1] = dq;
src_offs[1] = dq_off;
init_async_submit(submit, flags | ASYNC_TX_XOR_DROP_DST, tx, cb_fn,
cb_param, scribble);
tx = async_xor(p, srcs, 0, 2, bytes, submit);
tx = async_xor_offs(p, p_off, srcs, src_offs, 2, bytes, submit);
return tx;
}

120
crypto/async_tx/async_xor.c
View File

@ -97,7 +97,8 @@ do_async_xor(struct dma_chan *chan, struct dmaengine_unmap_data *unmap,
}
static void
do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset,
do_sync_xor_offs(struct page *dest, unsigned int offset,
struct page **src_list, unsigned int *src_offs,
int src_cnt, size_t len, struct async_submit_ctl *submit)
{
int i;
@ -114,7 +115,8 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset,
/* convert to buffer pointers */
for (i = 0; i < src_cnt; i++)
if (src_list[i])
srcs[xor_src_cnt++] = page_address(src_list[i]) + offset;
srcs[xor_src_cnt++] = page_address(src_list[i]) +
(src_offs ? src_offs[i] : offset);
src_cnt = xor_src_cnt;
/* set destination address */
dest_buf = page_address(dest) + offset;
@ -135,11 +137,31 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset,
async_tx_sync_epilog(submit);
}
static inline bool
dma_xor_aligned_offsets(struct dma_device *device, unsigned int offset,
unsigned int *src_offs, int src_cnt, int len)
{
int i;
if (!is_dma_xor_aligned(device, offset, 0, len))
return false;
if (!src_offs)
return true;
for (i = 0; i < src_cnt; i++) {
if (!is_dma_xor_aligned(device, src_offs[i], 0, len))
return false;
}
return true;
}
/**
* async_xor - attempt to xor a set of blocks with a dma engine.
* async_xor_offs - attempt to xor a set of blocks with a dma engine.
* @dest: destination page
* @offset: dst offset to start transaction
* @src_list: array of source pages
* @offset: common src/dst offset to start transaction
* @src_offs: array of source pages offset, NULL means common src/dst offset
* @src_cnt: number of source pages
* @len: length in bytes
* @submit: submission / completion modifiers
@ -157,8 +179,9 @@ do_sync_xor(struct page *dest, struct page **src_list, unsigned int offset,
* is not specified.
*/
struct dma_async_tx_descriptor *
async_xor(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, struct async_submit_ctl *submit)
async_xor_offs(struct page *dest, unsigned int offset,
struct page **src_list, unsigned int *src_offs,
int src_cnt, size_t len, struct async_submit_ctl *submit)
{
struct dma_chan *chan = async_tx_find_channel(submit, DMA_XOR,
&dest, 1, src_list,
@ -171,7 +194,8 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset,
if (device)
unmap = dmaengine_get_unmap_data(device->dev, src_cnt+1, GFP_NOWAIT);
if (unmap && is_dma_xor_aligned(device, offset, 0, len)) {
if (unmap && dma_xor_aligned_offsets(device, offset,
src_offs, src_cnt, len)) {
struct dma_async_tx_descriptor *tx;
int i, j;
@ -184,7 +208,8 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset,
continue;
unmap->to_cnt++;
unmap->addr[j++] = dma_map_page(device->dev, src_list[i],
offset, len, DMA_TO_DEVICE);
src_offs ? src_offs[i] : offset,
len, DMA_TO_DEVICE);
}
/* map it bidirectional as it may be re-used as a source */
@ -213,11 +238,42 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset,
/* wait for any prerequisite operations */
async_tx_quiesce(&submit->depend_tx);
do_sync_xor(dest, src_list, offset, src_cnt, len, submit);
do_sync_xor_offs(dest, offset, src_list, src_offs,
src_cnt, len, submit);
return NULL;
}
}
EXPORT_SYMBOL_GPL(async_xor_offs);
/**
* async_xor - attempt to xor a set of blocks with a dma engine.
* @dest: destination page
* @src_list: array of source pages
* @offset: common src/dst offset to start transaction
* @src_cnt: number of source pages
* @len: length in bytes
* @submit: submission / completion modifiers
*
* honored flags: ASYNC_TX_ACK, ASYNC_TX_XOR_ZERO_DST, ASYNC_TX_XOR_DROP_DST
*
* xor_blocks always uses the dest as a source so the
* ASYNC_TX_XOR_ZERO_DST flag must be set to not include dest data in
* the calculation. The assumption with dma eninges is that they only
* use the destination buffer as a source when it is explicity specified
* in the source list.
*
* src_list note: if the dest is also a source it must be at index zero.
* The contents of this array will be overwritten if a scribble region
* is not specified.
*/
struct dma_async_tx_descriptor *
async_xor(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, struct async_submit_ctl *submit)
{
return async_xor_offs(dest, offset, src_list, NULL,
src_cnt, len, submit);
}
EXPORT_SYMBOL_GPL(async_xor);
static int page_is_zero(struct page *p, unsigned int offset, size_t len)
@ -237,10 +293,11 @@ xor_val_chan(struct async_submit_ctl *submit, struct page *dest,
}
/**
* async_xor_val - attempt a xor parity check with a dma engine.
* async_xor_val_offs - attempt a xor parity check with a dma engine.
* @dest: destination page used if the xor is performed synchronously
* @offset: des offset in pages to start transaction
* @src_list: array of source pages
* @offset: offset in pages to start transaction
* @src_offs: array of source pages offset, NULL means common src/det offset
* @src_cnt: number of source pages
* @len: length in bytes
* @result: 0 if sum == 0 else non-zero
@ -253,9 +310,10 @@ xor_val_chan(struct async_submit_ctl *submit, struct page *dest,
* is not specified.
*/
struct dma_async_tx_descriptor *
async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, enum sum_check_flags *result,
struct async_submit_ctl *submit)
async_xor_val_offs(struct page *dest, unsigned int offset,
struct page **src_list, unsigned int *src_offs,
int src_cnt, size_t len, enum sum_check_flags *result,
struct async_submit_ctl *submit)
{
struct dma_chan *chan = xor_val_chan(submit, dest, src_list, src_cnt, len);
struct dma_device *device = chan ? chan->device : NULL;
@ -268,7 +326,7 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
unmap = dmaengine_get_unmap_data(device->dev, src_cnt, GFP_NOWAIT);
if (unmap && src_cnt <= device->max_xor &&
is_dma_xor_aligned(device, offset, 0, len)) {
dma_xor_aligned_offsets(device, offset, src_offs, src_cnt, len)) {
unsigned long dma_prep_flags = 0;
int i;
@ -281,7 +339,8 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
for (i = 0; i < src_cnt; i++) {
unmap->addr[i] = dma_map_page(device->dev, src_list[i],
offset, len, DMA_TO_DEVICE);
src_offs ? src_offs[i] : offset,
len, DMA_TO_DEVICE);
unmap->to_cnt++;
}
unmap->len = len;
@ -312,7 +371,8 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
submit->flags |= ASYNC_TX_XOR_DROP_DST;
submit->flags &= ~ASYNC_TX_ACK;
tx = async_xor(dest, src_list, offset, src_cnt, len, submit);
tx = async_xor_offs(dest, offset, src_list, src_offs,
src_cnt, len, submit);
async_tx_quiesce(&tx);
@ -325,6 +385,32 @@ async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
return tx;
}
EXPORT_SYMBOL_GPL(async_xor_val_offs);
/**
* async_xor_val - attempt a xor parity check with a dma engine.
* @dest: destination page used if the xor is performed synchronously
* @src_list: array of source pages
* @offset: offset in pages to start transaction
* @src_cnt: number of source pages
* @len: length in bytes
* @result: 0 if sum == 0 else non-zero
* @submit: submission / completion modifiers
*
* honored flags: ASYNC_TX_ACK
*
* src_list note: if the dest is also a source it must be at index zero.
* The contents of this array will be overwritten if a scribble region
* is not specified.
*/
struct dma_async_tx_descriptor *
async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, enum sum_check_flags *result,
struct async_submit_ctl *submit)
{
return async_xor_val_offs(dest, offset, src_list, NULL, src_cnt,
len, result, submit);
}
EXPORT_SYMBOL_GPL(async_xor_val);
MODULE_AUTHOR("Intel Corporation");

24
crypto/async_tx/raid6test.c
View File

@ -18,6 +18,7 @@
#define NDISKS 64 /* Including P and Q */
static struct page *dataptrs[NDISKS];
unsigned int dataoffs[NDISKS];
static addr_conv_t addr_conv[NDISKS];
static struct page *data[NDISKS+3];
static struct page *spare;
@ -38,6 +39,7 @@ static void makedata(int disks)
for (i = 0; i < disks; i++) {
prandom_bytes(page_address(data[i]), PAGE_SIZE);
dataptrs[i] = data[i];
dataoffs[i] = 0;
}
}
@ -52,7 +54,8 @@ static char disk_type(int d, int disks)
}
/* Recover two failed blocks. */
static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, struct page **ptrs)
static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb,
struct page **ptrs, unsigned int *offs)
{
struct async_submit_ctl submit;
struct completion cmp;
@ -66,7 +69,8 @@ static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, stru
if (faila == disks-2) {
/* P+Q failure. Just rebuild the syndrome. */
init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv);
tx = async_gen_syndrome(ptrs, 0, disks, bytes, &submit);
tx = async_gen_syndrome(ptrs, offs,
disks, bytes, &submit);
} else {
struct page *blocks[NDISKS];
struct page *dest;
@ -89,22 +93,26 @@ static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, stru
tx = async_xor(dest, blocks, 0, count, bytes, &submit);
init_async_submit(&submit, 0, tx, NULL, NULL, addr_conv);
tx = async_gen_syndrome(ptrs, 0, disks, bytes, &submit);
tx = async_gen_syndrome(ptrs, offs,
disks, bytes, &submit);
}
} else {
if (failb == disks-2) {
/* data+P failure. */
init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv);
tx = async_raid6_datap_recov(disks, bytes, faila, ptrs, &submit);
tx = async_raid6_datap_recov(disks, bytes,
faila, ptrs, offs, &submit);
} else {
/* data+data failure. */
init_async_submit(&submit, 0, NULL, NULL, NULL, addr_conv);
tx = async_raid6_2data_recov(disks, bytes, faila, failb, ptrs, &submit);
tx = async_raid6_2data_recov(disks, bytes,
faila, failb, ptrs, offs, &submit);
}
}
init_completion(&cmp);
init_async_submit(&submit, ASYNC_TX_ACK, tx, callback, &cmp, addr_conv);
tx = async_syndrome_val(ptrs, 0, disks, bytes, &result, spare, &submit);
tx = async_syndrome_val(ptrs, offs,
disks, bytes, &result, spare, 0, &submit);
async_tx_issue_pending(tx);
if (wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000)) == 0)
@ -126,7 +134,7 @@ static int test_disks(int i, int j, int disks)
dataptrs[i] = recovi;
dataptrs[j] = recovj;
raid6_dual_recov(disks, PAGE_SIZE, i, j, dataptrs);
raid6_dual_recov(disks, PAGE_SIZE, i, j, dataptrs, dataoffs);
erra = memcmp(page_address(data[i]), page_address(recovi), PAGE_SIZE);
errb = memcmp(page_address(data[j]), page_address(recovj), PAGE_SIZE);
@ -162,7 +170,7 @@ static int test(int disks, int *tests)
/* Generate assumed good syndrome */
init_completion(&cmp);
init_async_submit(&submit, ASYNC_TX_ACK, NULL, callback, &cmp, addr_conv);
tx = async_gen_syndrome(dataptrs, 0, disks, PAGE_SIZE, &submit);
tx = async_gen_syndrome(dataptrs, dataoffs, disks, PAGE_SIZE, &submit);
async_tx_issue_pending(tx);
if (wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000)) == 0) {

5
drivers/block/null_blk.h
View File

@ -42,6 +42,9 @@ struct nullb_device {
struct badblocks badblocks;
unsigned int nr_zones;
unsigned int nr_zones_imp_open;
unsigned int nr_zones_exp_open;
unsigned int nr_zones_closed;
struct blk_zone *zones;
sector_t zone_size_sects;
@ -51,6 +54,8 @@ struct nullb_device {
unsigned long zone_size; /* zone size in MB if device is zoned */
unsigned long zone_capacity; /* zone capacity in MB if device is zoned */
unsigned int zone_nr_conv; /* number of conventional zones */
unsigned int zone_max_open; /* max number of open zones */
unsigned int zone_max_active; /* max number of active zones */
unsigned int submit_queues; /* number of submission queues */
unsigned int home_node; /* home node for the device */
unsigned int queue_mode; /* block interface */

22
drivers/block/null_blk_main.c
View File

@ -164,6 +164,10 @@ static bool shared_tags;
module_param(shared_tags, bool, 0444);
MODULE_PARM_DESC(shared_tags, "Share tag set between devices for blk-mq");
static bool g_shared_tag_bitmap;
module_param_named(shared_tag_bitmap, g_shared_tag_bitmap, bool, 0444);
MODULE_PARM_DESC(shared_tag_bitmap, "Use shared tag bitmap for all submission queues for blk-mq");
static int g_irqmode = NULL_IRQ_SOFTIRQ;
static int null_set_irqmode(const char *str, const struct kernel_param *kp)
@ -208,6 +212,14 @@ static unsigned int g_zone_nr_conv;
module_param_named(zone_nr_conv, g_zone_nr_conv, uint, 0444);
MODULE_PARM_DESC(zone_nr_conv, "Number of conventional zones when block device is zoned. Default: 0");
static unsigned int g_zone_max_open;
module_param_named(zone_max_open, g_zone_max_open, uint, 0444);
MODULE_PARM_DESC(zone_max_open, "Maximum number of open zones when block device is zoned. Default: 0 (no limit)");
static unsigned int g_zone_max_active;
module_param_named(zone_max_active, g_zone_max_active, uint, 0444);
MODULE_PARM_DESC(zone_max_active, "Maximum number of active zones when block device is zoned. Default: 0 (no limit)");
static struct nullb_device *null_alloc_dev(void);
static void null_free_dev(struct nullb_device *dev);
static void null_del_dev(struct nullb *nullb);
@ -347,6 +359,8 @@ NULLB_DEVICE_ATTR(zoned, bool, NULL);
NULLB_DEVICE_ATTR(zone_size, ulong, NULL);
NULLB_DEVICE_ATTR(zone_capacity, ulong, NULL);
NULLB_DEVICE_ATTR(zone_nr_conv, uint, NULL);
NULLB_DEVICE_ATTR(zone_max_open, uint, NULL);
NULLB_DEVICE_ATTR(zone_max_active, uint, NULL);
static ssize_t nullb_device_power_show(struct config_item *item, char *page)
{
@ -464,6 +478,8 @@ static struct configfs_attribute *nullb_device_attrs[] = {
&nullb_device_attr_zone_size,
&nullb_device_attr_zone_capacity,
&nullb_device_attr_zone_nr_conv,
&nullb_device_attr_zone_max_open,
&nullb_device_attr_zone_max_active,
NULL,
};
@ -517,7 +533,7 @@ nullb_group_drop_item(struct config_group *group, struct config_item *item)
static ssize_t memb_group_features_show(struct config_item *item, char *page)
{
return snprintf(page, PAGE_SIZE,
"memory_backed,discard,bandwidth,cache,badblocks,zoned,zone_size,zone_capacity,zone_nr_conv\n");
"memory_backed,discard,bandwidth,cache,badblocks,zoned,zone_size,zone_capacity,zone_nr_conv,zone_max_open,zone_max_active\n");
}
CONFIGFS_ATTR_RO(memb_group_, features);
@ -580,6 +596,8 @@ static struct nullb_device *null_alloc_dev(void)
dev->zone_size = g_zone_size;
dev->zone_capacity = g_zone_capacity;
dev->zone_nr_conv = g_zone_nr_conv;
dev->zone_max_open = g_zone_max_open;
dev->zone_max_active = g_zone_max_active;
return dev;
}
@ -1692,6 +1710,8 @@ static int null_init_tag_set(struct nullb *nullb, struct blk_mq_tag_set *set)
set->flags = BLK_MQ_F_SHOULD_MERGE;
if (g_no_sched)
set->flags |= BLK_MQ_F_NO_SCHED;
if (g_shared_tag_bitmap)
set->flags |= BLK_MQ_F_TAG_HCTX_SHARED;
set->driver_data = NULL;
if ((nullb && nullb->dev->blocking) || g_blocking)

333
drivers/block/null_blk_zoned.c
View File

@ -51,6 +51,22 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q)
dev->zone_nr_conv);
}
/* Max active zones has to be < nbr of seq zones in order to be enforceable */
if (dev->zone_max_active >= dev->nr_zones - dev->zone_nr_conv) {
dev->zone_max_active = 0;
pr_info("zone_max_active limit disabled, limit >= zone count\n");
}
/* Max open zones has to be <= max active zones */
if (dev->zone_max_active && dev->zone_max_open > dev->zone_max_active) {
dev->zone_max_open = dev->zone_max_active;
pr_info("changed the maximum number of open zones to %u\n",
dev->nr_zones);
} else if (dev->zone_max_open >= dev->nr_zones - dev->zone_nr_conv) {
dev->zone_max_open = 0;
pr_info("zone_max_open limit disabled, limit >= zone count\n");
}
for (i = 0; i < dev->zone_nr_conv; i++) {
struct blk_zone *zone = &dev->zones[i];
@ -99,6 +115,8 @@ int null_register_zoned_dev(struct nullb *nullb)
}
blk_queue_max_zone_append_sectors(q, dev->zone_size_sects);
blk_queue_max_open_zones(q, dev->zone_max_open);
blk_queue_max_active_zones(q, dev->zone_max_active);
return 0;
}
@ -159,6 +177,103 @@ size_t null_zone_valid_read_len(struct nullb *nullb,
return (zone->wp - sector) << SECTOR_SHIFT;
}
static blk_status_t null_close_zone(struct nullb_device *dev, struct blk_zone *zone)
{
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
switch (zone->cond) {
case BLK_ZONE_COND_CLOSED:
/* close operation on closed is not an error */
return BLK_STS_OK;
case BLK_ZONE_COND_IMP_OPEN:
dev->nr_zones_imp_open--;
break;
case BLK_ZONE_COND_EXP_OPEN:
dev->nr_zones_exp_open--;
break;
case BLK_ZONE_COND_EMPTY:
case BLK_ZONE_COND_FULL:
default:
return BLK_STS_IOERR;
}
if (zone->wp == zone->start) {
zone->cond = BLK_ZONE_COND_EMPTY;
} else {
zone->cond = BLK_ZONE_COND_CLOSED;
dev->nr_zones_closed++;
}
return BLK_STS_OK;
}
static void null_close_first_imp_zone(struct nullb_device *dev)
{
unsigned int i;
for (i = dev->zone_nr_conv; i < dev->nr_zones; i++) {
if (dev->zones[i].cond == BLK_ZONE_COND_IMP_OPEN) {
null_close_zone(dev, &dev->zones[i]);
return;
}
}
}
static bool null_can_set_active(struct nullb_device *dev)
{
if (!dev->zone_max_active)
return true;
return dev->nr_zones_exp_open + dev->nr_zones_imp_open +
dev->nr_zones_closed < dev->zone_max_active;
}
static bool null_can_open(struct nullb_device *dev)
{
if (!dev->zone_max_open)
return true;
if (dev->nr_zones_exp_open + dev->nr_zones_imp_open < dev->zone_max_open)
return true;
if (dev->nr_zones_imp_open && null_can_set_active(dev)) {
null_close_first_imp_zone(dev);
return true;
}
return false;
}
/*
* This function matches the manage open zone resources function in the ZBC standard,
* with the addition of max active zones support (added in the ZNS standard).
*
* The function determines if a zone can transition to implicit open or explicit open,
* while maintaining the max open zone (and max active zone) limit(s). It may close an
* implicit open zone in order to make additional zone resources available.
*
* ZBC states that an implicit open zone shall be closed only if there is not
* room within the open limit. However, with the addition of an active limit,
* it is not certain that closing an implicit open zone will allow a new zone
* to be opened, since we might already be at the active limit capacity.
*/
static bool null_has_zone_resources(struct nullb_device *dev, struct blk_zone *zone)
{
switch (zone->cond) {
case BLK_ZONE_COND_EMPTY:
if (!null_can_set_active(dev))
return false;
fallthrough;
case BLK_ZONE_COND_CLOSED:
return null_can_open(dev);
default:
/* Should never be called for other states */
WARN_ON(1);
return false;
}
}
static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector,
unsigned int nr_sectors, bool append)
{
@ -177,43 +292,155 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector,
/* Cannot write to a full zone */
return BLK_STS_IOERR;
case BLK_ZONE_COND_EMPTY:
case BLK_ZONE_COND_CLOSED:
if (!null_has_zone_resources(dev, zone))
return BLK_STS_IOERR;
break;
case BLK_ZONE_COND_IMP_OPEN:
case BLK_ZONE_COND_EXP_OPEN:
case BLK_ZONE_COND_CLOSED:
/*
* Regular writes must be at the write pointer position.
* Zone append writes are automatically issued at the write
* pointer and the position returned using the request or BIO
* sector.
*/
if (append) {
sector = zone->wp;
if (cmd->bio)
cmd->bio->bi_iter.bi_sector = sector;
else
cmd->rq->__sector = sector;
} else if (sector != zone->wp) {
return BLK_STS_IOERR;
}
if (zone->wp + nr_sectors > zone->start + zone->capacity)
return BLK_STS_IOERR;
if (zone->cond != BLK_ZONE_COND_EXP_OPEN)
zone->cond = BLK_ZONE_COND_IMP_OPEN;
ret = null_process_cmd(cmd, REQ_OP_WRITE, sector, nr_sectors);
if (ret != BLK_STS_OK)
return ret;
zone->wp += nr_sectors;
if (zone->wp == zone->start + zone->capacity)
zone->cond = BLK_ZONE_COND_FULL;
return BLK_STS_OK;
break;
default:
/* Invalid zone condition */
return BLK_STS_IOERR;
}
/*
* Regular writes must be at the write pointer position.
* Zone append writes are automatically issued at the write
* pointer and the position returned using the request or BIO
* sector.
*/
if (append) {
sector = zone->wp;
if (cmd->bio)
cmd->bio->bi_iter.bi_sector = sector;
else
cmd->rq->__sector = sector;
} else if (sector != zone->wp) {
return BLK_STS_IOERR;
}
if (zone->wp + nr_sectors > zone->start + zone->capacity)
return BLK_STS_IOERR;
if (zone->cond == BLK_ZONE_COND_CLOSED) {
dev->nr_zones_closed--;
dev->nr_zones_imp_open++;
} else if (zone->cond == BLK_ZONE_COND_EMPTY) {
dev->nr_zones_imp_open++;
}
if (zone->cond != BLK_ZONE_COND_EXP_OPEN)
zone->cond = BLK_ZONE_COND_IMP_OPEN;
ret = null_process_cmd(cmd, REQ_OP_WRITE, sector, nr_sectors);
if (ret != BLK_STS_OK)
return ret;
zone->wp += nr_sectors;
if (zone->wp == zone->start + zone->capacity) {
if (zone->cond == BLK_ZONE_COND_EXP_OPEN)
dev->nr_zones_exp_open--;
else if (zone->cond == BLK_ZONE_COND_IMP_OPEN)
dev->nr_zones_imp_open--;
zone->cond = BLK_ZONE_COND_FULL;
}
return BLK_STS_OK;
}
static blk_status_t null_open_zone(struct nullb_device *dev, struct blk_zone *zone)
{
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
switch (zone->cond) {
case BLK_ZONE_COND_EXP_OPEN:
/* open operation on exp open is not an error */
return BLK_STS_OK;
case BLK_ZONE_COND_EMPTY:
if (!null_has_zone_resources(dev, zone))
return BLK_STS_IOERR;
break;
case BLK_ZONE_COND_IMP_OPEN:
dev->nr_zones_imp_open--;
break;
case BLK_ZONE_COND_CLOSED:
if (!null_has_zone_resources(dev, zone))
return BLK_STS_IOERR;
dev->nr_zones_closed--;
break;
case BLK_ZONE_COND_FULL:
default:
return BLK_STS_IOERR;
}
zone->cond = BLK_ZONE_COND_EXP_OPEN;
dev->nr_zones_exp_open++;
return BLK_STS_OK;
}
static blk_status_t null_finish_zone(struct nullb_device *dev, struct blk_zone *zone)
{
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
switch (zone->cond) {
case BLK_ZONE_COND_FULL:
/* finish operation on full is not an error */
return BLK_STS_OK;
case BLK_ZONE_COND_EMPTY:
if (!null_has_zone_resources(dev, zone))
return BLK_STS_IOERR;
break;
case BLK_ZONE_COND_IMP_OPEN:
dev->nr_zones_imp_open--;
break;
case BLK_ZONE_COND_EXP_OPEN:
dev->nr_zones_exp_open--;
break;
case BLK_ZONE_COND_CLOSED:
if (!null_has_zone_resources(dev, zone))
return BLK_STS_IOERR;
dev->nr_zones_closed--;
break;
default:
return BLK_STS_IOERR;
}
zone->cond = BLK_ZONE_COND_FULL;
zone->wp = zone->start + zone->len;
return BLK_STS_OK;
}
static blk_status_t null_reset_zone(struct nullb_device *dev, struct blk_zone *zone)
{
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
switch (zone->cond) {
case BLK_ZONE_COND_EMPTY:
/* reset operation on empty is not an error */
return BLK_STS_OK;
case BLK_ZONE_COND_IMP_OPEN:
dev->nr_zones_imp_open--;
break;
case BLK_ZONE_COND_EXP_OPEN:
dev->nr_zones_exp_open--;
break;
case BLK_ZONE_COND_CLOSED:
dev->nr_zones_closed--;
break;
case BLK_ZONE_COND_FULL:
break;
default:
return BLK_STS_IOERR;
}
zone->cond = BLK_ZONE_COND_EMPTY;
zone->wp = zone->start;
return BLK_STS_OK;
}
static blk_status_t null_zone_mgmt(struct nullb_cmd *cmd, enum req_opf op,
@ -222,56 +449,34 @@ static blk_status_t null_zone_mgmt(struct nullb_cmd *cmd, enum req_opf op,
struct nullb_device *dev = cmd->nq->dev;
unsigned int zone_no = null_zone_no(dev, sector);
struct blk_zone *zone = &dev->zones[zone_no];
blk_status_t ret = BLK_STS_OK;
size_t i;
switch (op) {
case REQ_OP_ZONE_RESET_ALL:
for (i = 0; i < dev->nr_zones; i++) {
if (zone[i].type == BLK_ZONE_TYPE_CONVENTIONAL)
continue;
zone[i].cond = BLK_ZONE_COND_EMPTY;
zone[i].wp = zone[i].start;
}
for (i = dev->zone_nr_conv; i < dev->nr_zones; i++)
null_reset_zone(dev, &dev->zones[i]);
break;
case REQ_OP_ZONE_RESET:
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
zone->cond = BLK_ZONE_COND_EMPTY;
zone->wp = zone->start;
ret = null_reset_zone(dev, zone);
break;
case REQ_OP_ZONE_OPEN:
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
if (zone->cond == BLK_ZONE_COND_FULL)
return BLK_STS_IOERR;
zone->cond = BLK_ZONE_COND_EXP_OPEN;
ret = null_open_zone(dev, zone);
break;
case REQ_OP_ZONE_CLOSE:
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
if (zone->cond == BLK_ZONE_COND_FULL)
return BLK_STS_IOERR;
if (zone->wp == zone->start)
zone->cond = BLK_ZONE_COND_EMPTY;
else
zone->cond = BLK_ZONE_COND_CLOSED;
ret = null_close_zone(dev, zone);
break;
case REQ_OP_ZONE_FINISH:
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
return BLK_STS_IOERR;
zone->cond = BLK_ZONE_COND_FULL;
zone->wp = zone->start + zone->len;
ret = null_finish_zone(dev, zone);
break;
default:
return BLK_STS_NOTSUPP;
}
trace_nullb_zone_op(cmd, zone_no, zone->cond);
return BLK_STS_OK;
if (ret == BLK_STS_OK)
trace_nullb_zone_op(cmd, zone_no, zone->cond);
return ret;
}
blk_status_t null_process_zoned_cmd(struct nullb_cmd *cmd, enum req_opf op,

2
drivers/block/rsxx/core.c
View File

@ -439,7 +439,7 @@ static void card_state_change(struct rsxx_cardinfo *card,
case CARD_STATE_FAULT:
dev_crit(CARD_TO_DEV(card),
"Hardware Fault reported!\n");
/* Fall through. */
fallthrough;
/* Everything else, detach DMA interface if it's attached. */
case CARD_STATE_SHUTDOWN:

60
drivers/md/bcache/alloc.c
View File

@ -49,7 +49,7 @@
*
* bch_bucket_alloc() allocates a single bucket from a specific cache.
*
* bch_bucket_alloc_set() allocates one or more buckets from different caches
* bch_bucket_alloc_set() allocates one bucket from different caches
* out of a cache set.
*
* free_some_buckets() drives all the processes described above. It's called
@ -87,8 +87,7 @@ void bch_rescale_priorities(struct cache_set *c, int sectors)
{
struct cache *ca;
struct bucket *b;
unsigned long next = c->nbuckets * c->sb.bucket_size / 1024;
unsigned int i;
unsigned long next = c->nbuckets * c->cache->sb.bucket_size / 1024;
int r;
atomic_sub(sectors, &c->rescale);
@ -104,14 +103,14 @@ void bch_rescale_priorities(struct cache_set *c, int sectors)
c->min_prio = USHRT_MAX;
for_each_cache(ca, c, i)
for_each_bucket(b, ca)
if (b->prio &&
b->prio != BTREE_PRIO &&
!atomic_read(&b->pin)) {
b->prio--;
c->min_prio = min(c->min_prio, b->prio);
}
ca = c->cache;
for_each_bucket(b, ca)
if (b->prio &&
b->prio != BTREE_PRIO &&
!atomic_read(&b->pin)) {
b->prio--;
c->min_prio = min(c->min_prio, b->prio);
}
mutex_unlock(&c->bucket_lock);
}
@ -362,7 +361,7 @@ retry_invalidate:
* new stuff to them:
*/
allocator_wait(ca, !atomic_read(&ca->set->prio_blocked));
if (CACHE_SYNC(&ca->set->sb)) {
if (CACHE_SYNC(&ca->sb)) {
/*
* This could deadlock if an allocation with a btree
* node locked ever blocked - having the btree node
@ -488,34 +487,29 @@ void bch_bucket_free(struct cache_set *c, struct bkey *k)
}
int __bch_bucket_alloc_set(struct cache_set *c, unsigned int reserve,
struct bkey *k, int n, bool wait)
struct bkey *k, bool wait)
{
int i;
struct cache *ca;
long b;
/* No allocation if CACHE_SET_IO_DISABLE bit is set */
if (unlikely(test_bit(CACHE_SET_IO_DISABLE, &c->flags)))
return -1;
lockdep_assert_held(&c->bucket_lock);
BUG_ON(!n || n > c->caches_loaded || n > MAX_CACHES_PER_SET);
bkey_init(k);
/* sort by free space/prio of oldest data in caches */
ca = c->cache;
b = bch_bucket_alloc(ca, reserve, wait);
if (b == -1)
goto err;
for (i = 0; i < n; i++) {
struct cache *ca = c->cache_by_alloc[i];
long b = bch_bucket_alloc(ca, reserve, wait);
k->ptr[0] = MAKE_PTR(ca->buckets[b].gen,
bucket_to_sector(c, b),
ca->sb.nr_this_dev);
if (b == -1)
goto err;
k->ptr[i] = MAKE_PTR(ca->buckets[b].gen,
bucket_to_sector(c, b),
ca->sb.nr_this_dev);
SET_KEY_PTRS(k, i + 1);
}
SET_KEY_PTRS(k, 1);
return 0;
err:
@ -525,12 +519,12 @@ err:
}
int bch_bucket_alloc_set(struct cache_set *c, unsigned int reserve,
struct bkey *k, int n, bool wait)
struct bkey *k, bool wait)
{
int ret;
mutex_lock(&c->bucket_lock);
ret = __bch_bucket_alloc_set(c, reserve, k, n, wait);
ret = __bch_bucket_alloc_set(c, reserve, k, wait);
mutex_unlock(&c->bucket_lock);
return ret;
}
@ -589,7 +583,7 @@ static struct open_bucket *pick_data_bucket(struct cache_set *c,
struct open_bucket, list);
found:
if (!ret->sectors_free && KEY_PTRS(alloc)) {
ret->sectors_free = c->sb.bucket_size;
ret->sectors_free = c->cache->sb.bucket_size;
bkey_copy(&ret->key, alloc);
bkey_init(alloc);
}
@ -638,7 +632,7 @@ bool bch_alloc_sectors(struct cache_set *c,
spin_unlock(&c->data_bucket_lock);
if (bch_bucket_alloc_set(c, watermark, &alloc.key, 1, wait))
if (bch_bucket_alloc_set(c, watermark, &alloc.key, wait))
return false;
spin_lock(&c->data_bucket_lock);
@ -683,7 +677,7 @@ bool bch_alloc_sectors(struct cache_set *c,
&PTR_CACHE(c, &b->key, i)->sectors_written);
}
if (b->sectors_free < c->sb.block_size)
if (b->sectors_free < c->cache->sb.block_size)
b->sectors_free = 0;
/*

29
drivers/md/bcache/bcache.h
View File

@ -517,11 +517,7 @@ struct cache_set {
atomic_t idle_counter;
atomic_t at_max_writeback_rate;
struct cache_sb sb;
struct cache *cache[MAX_CACHES_PER_SET];
struct cache *cache_by_alloc[MAX_CACHES_PER_SET];
int caches_loaded;
struct cache *cache;
struct bcache_device **devices;
unsigned int devices_max_used;
@ -670,6 +666,7 @@ struct cache_set {
struct mutex verify_lock;
#endif
uint8_t set_uuid[16];
unsigned int nr_uuids;
struct uuid_entry *uuids;
BKEY_PADDED(uuid_bucket);
@ -758,9 +755,8 @@ struct bbio {
#define btree_default_blocks(c) \
((unsigned int) ((PAGE_SECTORS * (c)->btree_pages) >> (c)->block_bits))
#define bucket_pages(c) ((c)->sb.bucket_size / PAGE_SECTORS)
#define bucket_bytes(c) ((c)->sb.bucket_size << 9)
#define block_bytes(c) ((c)->sb.block_size << 9)
#define bucket_bytes(ca) ((ca)->sb.bucket_size << 9)
#define block_bytes(ca) ((ca)->sb.block_size << 9)
static inline unsigned int meta_bucket_pages(struct cache_sb *sb)
{
@ -801,14 +797,14 @@ static inline sector_t bucket_to_sector(struct cache_set *c, size_t b)
static inline sector_t bucket_remainder(struct cache_set *c, sector_t s)
{
return s & (c->sb.bucket_size - 1);
return s & (c->cache->sb.bucket_size - 1);
}
static inline struct cache *PTR_CACHE(struct cache_set *c,
const struct bkey *k,
unsigned int ptr)
{
return c->cache[PTR_DEV(k, ptr)];
return c->cache;
}
static inline size_t PTR_BUCKET_NR(struct cache_set *c,
@ -889,9 +885,6 @@ do { \
/* Looping macros */
#define for_each_cache(ca, cs, iter) \
for (iter = 0; ca = cs->cache[iter], iter < (cs)->sb.nr_in_set; iter++)
#define for_each_bucket(b, ca) \
for (b = (ca)->buckets + (ca)->sb.first_bucket; \
b < (ca)->buckets + (ca)->sb.nbuckets; b++)
@ -933,11 +926,9 @@ static inline uint8_t bucket_gc_gen(struct bucket *b)
static inline void wake_up_allocators(struct cache_set *c)
{
struct cache *ca;
unsigned int i;
struct cache *ca = c->cache;
for_each_cache(ca, c, i)
wake_up_process(ca->alloc_thread);
wake_up_process(ca->alloc_thread);
}
static inline void closure_bio_submit(struct cache_set *c,
@ -994,9 +985,9 @@ void bch_bucket_free(struct cache_set *c, struct bkey *k);
long bch_bucket_alloc(struct cache *ca, unsigned int reserve, bool wait);
int __bch_bucket_alloc_set(struct cache_set *c, unsigned int reserve,
struct bkey *k, int n, bool wait);
struct bkey *k, bool wait);
int bch_bucket_alloc_set(struct cache_set *c, unsigned int reserve,
struct bkey *k, int n, bool wait);
struct bkey *k, bool wait);
bool bch_alloc_sectors(struct cache_set *c, struct bkey *k,
unsigned int sectors, unsigned int write_point,
unsigned int write_prio, bool wait);

146
drivers/md/bcache/btree.c
View File

@ -104,7 +104,7 @@
static inline struct bset *write_block(struct btree *b)
{
return ((void *) btree_bset_first(b)) + b->written * block_bytes(b->c);
return ((void *) btree_bset_first(b)) + b->written * block_bytes(b->c->cache);
}
static void bch_btree_init_next(struct btree *b)
@ -117,7 +117,7 @@ static void bch_btree_init_next(struct btree *b)
if (b->written < btree_blocks(b))
bch_bset_init_next(&b->keys, write_block(b),
bset_magic(&b->c->sb));
bset_magic(&b->c->cache->sb));
}
@ -155,7 +155,7 @@ void bch_btree_node_read_done(struct btree *b)
* See the comment arount cache_set->fill_iter.
*/
iter = mempool_alloc(&b->c->fill_iter, GFP_NOIO);
iter->size = b->c->sb.bucket_size / b->c->sb.block_size;
iter->size = b->c->cache->sb.bucket_size / b->c->cache->sb.block_size;
iter->used = 0;
#ifdef CONFIG_BCACHE_DEBUG
@ -173,12 +173,12 @@ void bch_btree_node_read_done(struct btree *b)
goto err;
err = "bad btree header";
if (b->written + set_blocks(i, block_bytes(b->c)) >
if (b->written + set_blocks(i, block_bytes(b->c->cache)) >
btree_blocks(b))
goto err;
err = "bad magic";
if (i->magic != bset_magic(&b->c->sb))
if (i->magic != bset_magic(&b->c->cache->sb))
goto err;
err = "bad checksum";
@ -199,13 +199,13 @@ void bch_btree_node_read_done(struct btree *b)
bch_btree_iter_push(iter, i->start, bset_bkey_last(i));
b->written += set_blocks(i, block_bytes(b->c));
b->written += set_blocks(i, block_bytes(b->c->cache));
}
err = "corrupted btree";
for (i = write_block(b);
bset_sector_offset(&b->keys, i) < KEY_SIZE(&b->key);
i = ((void *) i) + block_bytes(b->c))
i = ((void *) i) + block_bytes(b->c->cache))
if (i->seq == b->keys.set[0].data->seq)
goto err;
@ -219,7 +219,7 @@ void bch_btree_node_read_done(struct btree *b)
if (b->written < btree_blocks(b))
bch_bset_init_next(&b->keys, write_block(b),
bset_magic(&b->c->sb));
bset_magic(&b->c->cache->sb));
out:
mempool_free(iter, &b->c->fill_iter);
return;
@ -347,7 +347,7 @@ static void do_btree_node_write(struct btree *b)
b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c->cache));
b->bio->bi_opf = REQ_OP_WRITE | REQ_META | REQ_FUA;
bch_bio_map(b->bio, i);
@ -423,10 +423,10 @@ void __bch_btree_node_write(struct btree *b, struct closure *parent)
do_btree_node_write(b);
atomic_long_add(set_blocks(i, block_bytes(b->c)) * b->c->sb.block_size,
atomic_long_add(set_blocks(i, block_bytes(b->c->cache)) * b->c->cache->sb.block_size,
&PTR_CACHE(b->c, &b->key, 0)->btree_sectors_written);
b->written += set_blocks(i, block_bytes(b->c));
b->written += set_blocks(i, block_bytes(b->c->cache));
}
void bch_btree_node_write(struct btree *b, struct closure *parent)
@ -514,7 +514,7 @@ static void bch_btree_leaf_dirty(struct btree *b, atomic_t *journal_ref)
* mca -> memory cache
*/
#define mca_reserve(c) (((c->root && c->root->level) \
#define mca_reserve(c) (((!IS_ERR_OR_NULL(c->root) && c->root->level) \
? c->root->level : 1) * 8 + 16)
#define mca_can_free(c) \
max_t(int, 0, c->btree_cache_used - mca_reserve(c))
@ -738,7 +738,7 @@ void bch_btree_cache_free(struct cache_set *c)
if (c->verify_data)
list_move(&c->verify_data->list, &c->btree_cache);
free_pages((unsigned long) c->verify_ondisk, ilog2(meta_bucket_pages(&c->sb)));
free_pages((unsigned long) c->verify_ondisk, ilog2(meta_bucket_pages(&c->cache->sb)));
#endif
list_splice(&c->btree_cache_freeable,
@ -785,7 +785,8 @@ int bch_btree_cache_alloc(struct cache_set *c)
mutex_init(&c->verify_lock);
c->verify_ondisk = (void *)
__get_free_pages(GFP_KERNEL|__GFP_COMP, ilog2(meta_bucket_pages(&c->sb)));
__get_free_pages(GFP_KERNEL|__GFP_COMP,
ilog2(meta_bucket_pages(&c->cache->sb)));
if (!c->verify_ondisk) {
/*
* Don't worry about the mca_rereserve buckets
@ -1091,7 +1092,7 @@ struct btree *__bch_btree_node_alloc(struct cache_set *c, struct btree_op *op,
mutex_lock(&c->bucket_lock);
retry:
if (__bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, 1, wait))
if (__bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, wait))
goto err;
bkey_put(c, &k.key);
@ -1108,7 +1109,7 @@ retry:
}
b->parent = parent;
bch_bset_init_next(&b->keys, b->keys.set->data, bset_magic(&b->c->sb));
bch_bset_init_next(&b->keys, b->keys.set->data, bset_magic(&b->c->cache->sb));
mutex_unlock(&c->bucket_lock);
@ -1167,19 +1168,18 @@ static void make_btree_freeing_key(struct btree *b, struct bkey *k)
static int btree_check_reserve(struct btree *b, struct btree_op *op)
{
struct cache_set *c = b->c;
struct cache *ca;
unsigned int i, reserve = (c->root->level - b->level) * 2 + 1;
struct cache *ca = c->cache;
unsigned int reserve = (c->root->level - b->level) * 2 + 1;
mutex_lock(&c->bucket_lock);
for_each_cache(ca, c, i)
if (fifo_used(&ca->free[RESERVE_BTREE]) < reserve) {
if (op)
prepare_to_wait(&c->btree_cache_wait, &op->wait,
TASK_UNINTERRUPTIBLE);
mutex_unlock(&c->bucket_lock);
return -EINTR;
}
if (fifo_used(&ca->free[RESERVE_BTREE]) < reserve) {
if (op)
prepare_to_wait(&c->btree_cache_wait, &op->wait,
TASK_UNINTERRUPTIBLE);
mutex_unlock(&c->bucket_lock);
return -EINTR;
}
mutex_unlock(&c->bucket_lock);
@ -1345,7 +1345,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
if (nodes < 2 ||
__set_blocks(b->keys.set[0].data, keys,
block_bytes(b->c)) > blocks * (nodes - 1))
block_bytes(b->c->cache)) > blocks * (nodes - 1))
return 0;
for (i = 0; i < nodes; i++) {
@ -1379,7 +1379,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
k = bkey_next(k)) {
if (__set_blocks(n1, n1->keys + keys +
bkey_u64s(k),
block_bytes(b->c)) > blocks)
block_bytes(b->c->cache)) > blocks)
break;
last = k;
@ -1395,7 +1395,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
* though)
*/
if (__set_blocks(n1, n1->keys + n2->keys,
block_bytes(b->c)) >
block_bytes(b->c->cache)) >
btree_blocks(new_nodes[i]))
goto out_unlock_nocoalesce;
@ -1404,7 +1404,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
last = &r->b->key;
}
BUG_ON(__set_blocks(n1, n1->keys + keys, block_bytes(b->c)) >
BUG_ON(__set_blocks(n1, n1->keys + keys, block_bytes(b->c->cache)) >
btree_blocks(new_nodes[i]));
if (last)
@ -1695,7 +1695,6 @@ static void btree_gc_start(struct cache_set *c)
{
struct cache *ca;
struct bucket *b;
unsigned int i;
if (!c->gc_mark_valid)
return;
@ -1705,14 +1704,14 @@ static void btree_gc_start(struct cache_set *c)
c->gc_mark_valid = 0;
c->gc_done = ZERO_KEY;
for_each_cache(ca, c, i)
for_each_bucket(b, ca) {
b->last_gc = b->gen;
if (!atomic_read(&b->pin)) {
SET_GC_MARK(b, 0);
SET_GC_SECTORS_USED(b, 0);
}
ca = c->cache;
for_each_bucket(b, ca) {
b->last_gc = b->gen;
if (!atomic_read(&b->pin)) {
SET_GC_MARK(b, 0);
SET_GC_SECTORS_USED(b, 0);
}
}
mutex_unlock(&c->bucket_lock);
}
@ -1721,7 +1720,8 @@ static void bch_btree_gc_finish(struct cache_set *c)
{
struct bucket *b;
struct cache *ca;
unsigned int i;
unsigned int i, j;
uint64_t *k;
mutex_lock(&c->bucket_lock);
@ -1739,7 +1739,6 @@ static void bch_btree_gc_finish(struct cache_set *c)
struct bcache_device *d = c->devices[i];
struct cached_dev *dc;
struct keybuf_key *w, *n;
unsigned int j;
if (!d || UUID_FLASH_ONLY(&c->uuids[i]))
continue;
@ -1756,29 +1755,27 @@ static void bch_btree_gc_finish(struct cache_set *c)
rcu_read_unlock();
c->avail_nbuckets = 0;
for_each_cache(ca, c, i) {
uint64_t *i;
ca->invalidate_needs_gc = 0;
ca = c->cache;
ca->invalidate_needs_gc = 0;
for (i = ca->sb.d; i < ca->sb.d + ca->sb.keys; i++)
SET_GC_MARK(ca->buckets + *i, GC_MARK_METADATA);
for (k = ca->sb.d; k < ca->sb.d + ca->sb.keys; k++)
SET_GC_MARK(ca->buckets + *k, GC_MARK_METADATA);
for (i = ca->prio_buckets;
i < ca->prio_buckets + prio_buckets(ca) * 2; i++)
SET_GC_MARK(ca->buckets + *i, GC_MARK_METADATA);
for (k = ca->prio_buckets;
k < ca->prio_buckets + prio_buckets(ca) * 2; k++)
SET_GC_MARK(ca->buckets + *k, GC_MARK_METADATA);
for_each_bucket(b, ca) {
c->need_gc = max(c->need_gc, bucket_gc_gen(b));
for_each_bucket(b, ca) {
c->need_gc = max(c->need_gc, bucket_gc_gen(b));
if (atomic_read(&b->pin))
continue;
if (atomic_read(&b->pin))
continue;
BUG_ON(!GC_MARK(b) && GC_SECTORS_USED(b));
BUG_ON(!GC_MARK(b) && GC_SECTORS_USED(b));
if (!GC_MARK(b) || GC_MARK(b) == GC_MARK_RECLAIMABLE)
c->avail_nbuckets++;
}
if (!GC_MARK(b) || GC_MARK(b) == GC_MARK_RECLAIMABLE)
c->avail_nbuckets++;
}
mutex_unlock(&c->bucket_lock);
@ -1830,12 +1827,10 @@ static void bch_btree_gc(struct cache_set *c)
static bool gc_should_run(struct cache_set *c)
{
struct cache *ca;
unsigned int i;
struct cache *ca = c->cache;
for_each_cache(ca, c, i)
if (ca->invalidate_needs_gc)
return true;
if (ca->invalidate_needs_gc)
return true;
if (atomic_read(&c->sectors_to_gc) < 0)
return true;
@ -2081,9 +2076,8 @@ out:
void bch_initial_gc_finish(struct cache_set *c)
{
struct cache *ca;
struct cache *ca = c->cache;
struct bucket *b;
unsigned int i;
bch_btree_gc_finish(c);
@ -2098,20 +2092,18 @@ void bch_initial_gc_finish(struct cache_set *c)
* This is only safe for buckets that have no live data in them, which
* there should always be some of.
*/
for_each_cache(ca, c, i) {
for_each_bucket(b, ca) {
if (fifo_full(&ca->free[RESERVE_PRIO]) &&
fifo_full(&ca->free[RESERVE_BTREE]))
break;
for_each_bucket(b, ca) {
if (fifo_full(&ca->free[RESERVE_PRIO]) &&
fifo_full(&ca->free[RESERVE_BTREE]))
break;
if (bch_can_invalidate_bucket(ca, b) &&
!GC_MARK(b)) {
__bch_invalidate_one_bucket(ca, b);
if (!fifo_push(&ca->free[RESERVE_PRIO],
b - ca->buckets))
fifo_push(&ca->free[RESERVE_BTREE],
b - ca->buckets);
}
if (bch_can_invalidate_bucket(ca, b) &&
!GC_MARK(b)) {
__bch_invalidate_one_bucket(ca, b);
if (!fifo_push(&ca->free[RESERVE_PRIO],
b - ca->buckets))
fifo_push(&ca->free[RESERVE_BTREE],
b - ca->buckets);
}
}
@ -2219,7 +2211,7 @@ static int btree_split(struct btree *b, struct btree_op *op,
goto err;
split = set_blocks(btree_bset_first(n1),
block_bytes(n1->c)) > (btree_blocks(b) * 4) / 5;
block_bytes(n1->c->cache)) > (btree_blocks(b) * 4) / 5;
if (split) {
unsigned int keys = 0;

2
drivers/md/bcache/btree.h
View File

@ -194,7 +194,7 @@ static inline unsigned int bset_block_offset(struct btree *b, struct bset *i)
static inline void set_gc_sectors(struct cache_set *c)
{
atomic_set(&c->sectors_to_gc, c->sb.bucket_size * c->nbuckets / 16);
atomic_set(&c->sectors_to_gc, c->cache->sb.bucket_size * c->nbuckets / 16);
}
void bkey_put(struct cache_set *c, struct bkey *k);

16
drivers/md/bcache/closure.c
View File

@ -159,7 +159,7 @@ void closure_debug_destroy(struct closure *cl)
static struct dentry *closure_debug;
static int debug_seq_show(struct seq_file *f, void *data)
static int debug_show(struct seq_file *f, void *data)
{
struct closure *cl;
@ -188,17 +188,7 @@ static int debug_seq_show(struct seq_file *f, void *data)
return 0;
}
static int debug_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, debug_seq_show, NULL);
}
static const struct file_operations debug_ops = {
.owner = THIS_MODULE,
.open = debug_seq_open,
.read = seq_read,
.release = single_release
};
DEFINE_SHOW_ATTRIBUTE(debug);
void __init closure_debug_init(void)
{
@ -209,7 +199,7 @@ void __init closure_debug_init(void)
* about this.
*/
closure_debug = debugfs_create_file(
"closures", 0400, bcache_debug, NULL, &debug_ops);
"closures", 0400, bcache_debug, NULL, &debug_fops);
}
#endif

10
drivers/md/bcache/debug.c
View File

@ -25,8 +25,8 @@ struct dentry *bcache_debug;
for (i = (start); \
(void *) i < (void *) (start) + (KEY_SIZE(&b->key) << 9) &&\
i->seq == (start)->seq; \
i = (void *) i + set_blocks(i, block_bytes(b->c)) * \
block_bytes(b->c))
i = (void *) i + set_blocks(i, block_bytes(b->c->cache)) * \
block_bytes(b->c->cache))
void bch_btree_verify(struct btree *b)
{
@ -82,14 +82,14 @@ void bch_btree_verify(struct btree *b)
for_each_written_bset(b, ondisk, i) {
unsigned int block = ((void *) i - (void *) ondisk) /
block_bytes(b->c);
block_bytes(b->c->cache);
pr_err("*** on disk block %u:\n", block);
bch_dump_bset(&b->keys, i, block);
}
pr_err("*** block %zu not written\n",
((void *) i - (void *) ondisk) / block_bytes(b->c));
((void *) i - (void *) ondisk) / block_bytes(b->c->cache));
for (j = 0; j < inmemory->keys; j++)
if (inmemory->d[j] != sorted->d[j])
@ -238,7 +238,7 @@ void bch_debug_init_cache_set(struct cache_set *c)
if (!IS_ERR_OR_NULL(bcache_debug)) {
char name[50];
snprintf(name, 50, "bcache-%pU", c->sb.set_uuid);
snprintf(name, 50, "bcache-%pU", c->set_uuid);
c->debug = debugfs_create_file(name, 0400, bcache_debug, c,
&cache_set_debug_ops);
}

6
drivers/md/bcache/extents.c
View File

@ -54,7 +54,7 @@ static bool __ptr_invalid(struct cache_set *c, const struct bkey *k)
size_t bucket = PTR_BUCKET_NR(c, k, i);
size_t r = bucket_remainder(c, PTR_OFFSET(k, i));
if (KEY_SIZE(k) + r > c->sb.bucket_size ||
if (KEY_SIZE(k) + r > c->cache->sb.bucket_size ||
bucket < ca->sb.first_bucket ||
bucket >= ca->sb.nbuckets)
return true;
@ -75,7 +75,7 @@ static const char *bch_ptr_status(struct cache_set *c, const struct bkey *k)
size_t bucket = PTR_BUCKET_NR(c, k, i);
size_t r = bucket_remainder(c, PTR_OFFSET(k, i));
if (KEY_SIZE(k) + r > c->sb.bucket_size)
if (KEY_SIZE(k) + r > c->cache->sb.bucket_size)
return "bad, length too big";
if (bucket < ca->sb.first_bucket)
return "bad, short offset";
@ -136,7 +136,7 @@ static void bch_bkey_dump(struct btree_keys *keys, const struct bkey *k)
size_t n = PTR_BUCKET_NR(b->c, k, j);
pr_cont(" bucket %zu", n);
if (n >= b->c->sb.first_bucket && n < b->c->sb.nbuckets)
if (n >= b->c->cache->sb.first_bucket && n < b->c->cache->sb.nbuckets)
pr_cont(" prio %i",
PTR_BUCKET(b->c, k, j)->prio);
}

4
drivers/md/bcache/features.c
View File

@ -30,7 +30,7 @@ static struct feature feature_list[] = {
for (f = &feature_list[0]; f->compat != 0; f++) { \
if (f->compat != BCH_FEATURE_ ## type) \
continue; \
if (BCH_HAS_ ## type ## _FEATURE(&c->sb, f->mask)) { \
if (BCH_HAS_ ## type ## _FEATURE(&c->cache->sb, f->mask)) { \
if (first) { \
out += snprintf(out, buf + size - out, \
"["); \
@ -44,7 +44,7 @@ static struct feature feature_list[] = {
\
out += snprintf(out, buf + size - out, "%s", f->string);\
\
if (BCH_HAS_ ## type ## _FEATURE(&c->sb, f->mask)) \
if (BCH_HAS_ ## type ## _FEATURE(&c->cache->sb, f->mask)) \
out += snprintf(out, buf + size - out, "]"); \
\
first = false; \

2
drivers/md/bcache/io.c
View File

@ -26,7 +26,7 @@ struct bio *bch_bbio_alloc(struct cache_set *c)
struct bbio *b = mempool_alloc(&c->bio_meta, GFP_NOIO);
struct bio *bio = &b->bio;
bio_init(bio, bio->bi_inline_vecs, meta_bucket_pages(&c->sb));
bio_init(bio, bio->bi_inline_vecs, meta_bucket_pages(&c->cache->sb));
return bio;
}

276
drivers/md/bcache/journal.c
View File

@ -98,7 +98,7 @@ reread: left = ca->sb.bucket_size - offset;
return ret;
}
blocks = set_blocks(j, block_bytes(ca->set));
blocks = set_blocks(j, block_bytes(ca));
/*
* Nodes in 'list' are in linear increasing order of
@ -179,112 +179,109 @@ int bch_journal_read(struct cache_set *c, struct list_head *list)
ret; \
})
struct cache *ca;
unsigned int iter;
struct cache *ca = c->cache;
int ret = 0;
struct journal_device *ja = &ca->journal;
DECLARE_BITMAP(bitmap, SB_JOURNAL_BUCKETS);
unsigned int i, l, r, m;
uint64_t seq;
for_each_cache(ca, c, iter) {
struct journal_device *ja = &ca->journal;
DECLARE_BITMAP(bitmap, SB_JOURNAL_BUCKETS);
unsigned int i, l, r, m;
uint64_t seq;
bitmap_zero(bitmap, SB_JOURNAL_BUCKETS);
pr_debug("%u journal buckets\n", ca->sb.njournal_buckets);
bitmap_zero(bitmap, SB_JOURNAL_BUCKETS);
pr_debug("%u journal buckets\n", ca->sb.njournal_buckets);
/*
* Read journal buckets ordered by golden ratio hash to quickly
* find a sequence of buckets with valid journal entries
*/
for (i = 0; i < ca->sb.njournal_buckets; i++) {
/*
* Read journal buckets ordered by golden ratio hash to quickly
* find a sequence of buckets with valid journal entries
* We must try the index l with ZERO first for
* correctness due to the scenario that the journal
* bucket is circular buffer which might have wrapped
*/
for (i = 0; i < ca->sb.njournal_buckets; i++) {
/*
* We must try the index l with ZERO first for
* correctness due to the scenario that the journal
* bucket is circular buffer which might have wrapped
*/
l = (i * 2654435769U) % ca->sb.njournal_buckets;
l = (i * 2654435769U) % ca->sb.njournal_buckets;
if (test_bit(l, bitmap))
break;
if (test_bit(l, bitmap))
break;
if (read_bucket(l))
goto bsearch;
}
/*
* If that fails, check all the buckets we haven't checked
* already
*/
pr_debug("falling back to linear search\n");
for_each_clear_bit(l, bitmap, ca->sb.njournal_buckets)
if (read_bucket(l))
goto bsearch;
/* no journal entries on this device? */
if (l == ca->sb.njournal_buckets)
continue;
bsearch:
BUG_ON(list_empty(list));
/* Binary search */
m = l;
r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
pr_debug("starting binary search, l %u r %u\n", l, r);
while (l + 1 < r) {
seq = list_entry(list->prev, struct journal_replay,
list)->j.seq;
m = (l + r) >> 1;
read_bucket(m);
if (seq != list_entry(list->prev, struct journal_replay,
list)->j.seq)
l = m;
else
r = m;
}
/*
* Read buckets in reverse order until we stop finding more
* journal entries
*/
pr_debug("finishing up: m %u njournal_buckets %u\n",
m, ca->sb.njournal_buckets);
l = m;
while (1) {
if (!l--)
l = ca->sb.njournal_buckets - 1;
if (l == m)
break;
if (test_bit(l, bitmap))
continue;
if (!read_bucket(l))
break;
}
seq = 0;
for (i = 0; i < ca->sb.njournal_buckets; i++)
if (ja->seq[i] > seq) {
seq = ja->seq[i];
/*
* When journal_reclaim() goes to allocate for
* the first time, it'll use the bucket after
* ja->cur_idx
*/
ja->cur_idx = i;
ja->last_idx = ja->discard_idx = (i + 1) %
ca->sb.njournal_buckets;
}
if (read_bucket(l))
goto bsearch;
}
/*
* If that fails, check all the buckets we haven't checked
* already
*/
pr_debug("falling back to linear search\n");
for_each_clear_bit(l, bitmap, ca->sb.njournal_buckets)
if (read_bucket(l))
goto bsearch;
/* no journal entries on this device? */
if (l == ca->sb.njournal_buckets)
goto out;
bsearch:
BUG_ON(list_empty(list));
/* Binary search */
m = l;
r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
pr_debug("starting binary search, l %u r %u\n", l, r);
while (l + 1 < r) {
seq = list_entry(list->prev, struct journal_replay,
list)->j.seq;
m = (l + r) >> 1;
read_bucket(m);
if (seq != list_entry(list->prev, struct journal_replay,
list)->j.seq)
l = m;
else
r = m;
}
/*
* Read buckets in reverse order until we stop finding more
* journal entries
*/
pr_debug("finishing up: m %u njournal_buckets %u\n",
m, ca->sb.njournal_buckets);
l = m;
while (1) {
if (!l--)
l = ca->sb.njournal_buckets - 1;
if (l == m)
break;
if (test_bit(l, bitmap))
continue;
if (!read_bucket(l))
break;
}
seq = 0;
for (i = 0; i < ca->sb.njournal_buckets; i++)
if (ja->seq[i] > seq) {
seq = ja->seq[i];
/*
* When journal_reclaim() goes to allocate for
* the first time, it'll use the bucket after
* ja->cur_idx
*/
ja->cur_idx = i;
ja->last_idx = ja->discard_idx = (i + 1) %
ca->sb.njournal_buckets;
}
out:
if (!list_empty(list))
c->journal.seq = list_entry(list->prev,
struct journal_replay,
@ -342,12 +339,10 @@ void bch_journal_mark(struct cache_set *c, struct list_head *list)
static bool is_discard_enabled(struct cache_set *s)
{
struct cache *ca;
unsigned int i;
struct cache *ca = s->cache;
for_each_cache(ca, s, i)
if (ca->discard)
return true;
if (ca->discard)
return true;
return false;
}
@ -633,9 +628,10 @@ static void do_journal_discard(struct cache *ca)
static void journal_reclaim(struct cache_set *c)
{
struct bkey *k = &c->journal.key;
struct cache *ca;
struct cache *ca = c->cache;
uint64_t last_seq;
unsigned int iter, n = 0;
unsigned int next;
struct journal_device *ja = &ca->journal;
atomic_t p __maybe_unused;
atomic_long_inc(&c->reclaim);
@ -647,46 +643,31 @@ static void journal_reclaim(struct cache_set *c)
/* Update last_idx */
for_each_cache(ca, c, iter) {
struct journal_device *ja = &ca->journal;
while (ja->last_idx != ja->cur_idx &&
ja->seq[ja->last_idx] < last_seq)
ja->last_idx = (ja->last_idx + 1) %
ca->sb.njournal_buckets;
while (ja->last_idx != ja->cur_idx &&
ja->seq[ja->last_idx] < last_seq)
ja->last_idx = (ja->last_idx + 1) %
ca->sb.njournal_buckets;
}
for_each_cache(ca, c, iter)
do_journal_discard(ca);
do_journal_discard(ca);
if (c->journal.blocks_free)
goto out;
/*
* Allocate:
* XXX: Sort by free journal space
*/
next = (ja->cur_idx + 1) % ca->sb.njournal_buckets;
/* No space available on this device */
if (next == ja->discard_idx)
goto out;
for_each_cache(ca, c, iter) {
struct journal_device *ja = &ca->journal;
unsigned int next = (ja->cur_idx + 1) % ca->sb.njournal_buckets;
ja->cur_idx = next;
k->ptr[0] = MAKE_PTR(0,
bucket_to_sector(c, ca->sb.d[ja->cur_idx]),
ca->sb.nr_this_dev);
atomic_long_inc(&c->reclaimed_journal_buckets);
/* No space available on this device */
if (next == ja->discard_idx)
continue;
bkey_init(k);
SET_KEY_PTRS(k, 1);
c->journal.blocks_free = ca->sb.bucket_size >> c->block_bits;
ja->cur_idx = next;
k->ptr[n++] = MAKE_PTR(0,
bucket_to_sector(c, ca->sb.d[ja->cur_idx]),
ca->sb.nr_this_dev);
atomic_long_inc(&c->reclaimed_journal_buckets);
}
if (n) {
bkey_init(k);
SET_KEY_PTRS(k, n);
c->journal.blocks_free = c->sb.bucket_size >> c->block_bits;
}
out:
if (!journal_full(&c->journal))
__closure_wake_up(&c->journal.wait);
@ -750,11 +731,11 @@ static void journal_write_unlocked(struct closure *cl)
__releases(c->journal.lock)
{
struct cache_set *c = container_of(cl, struct cache_set, journal.io);
struct cache *ca;
struct cache *ca = c->cache;
struct journal_write *w = c->journal.cur;
struct bkey *k = &c->journal.key;
unsigned int i, sectors = set_blocks(w->data, block_bytes(c)) *
c->sb.block_size;
unsigned int i, sectors = set_blocks(w->data, block_bytes(ca)) *
ca->sb.block_size;
struct bio *bio;
struct bio_list list;
@ -773,17 +754,15 @@ static void journal_write_unlocked(struct closure *cl)
return;
}
c->journal.blocks_free -= set_blocks(w->data, block_bytes(c));
c->journal.blocks_free -= set_blocks(w->data, block_bytes(ca));
w->data->btree_level = c->root->level;
bkey_copy(&w->data->btree_root, &c->root->key);
bkey_copy(&w->data->uuid_bucket, &c->uuid_bucket);
for_each_cache(ca, c, i)
w->data->prio_bucket[ca->sb.nr_this_dev] = ca->prio_buckets[0];
w->data->magic = jset_magic(&c->sb);
w->data->prio_bucket[ca->sb.nr_this_dev] = ca->prio_buckets[0];
w->data->magic = jset_magic(&ca->sb);
w->data->version = BCACHE_JSET_VERSION;
w->data->last_seq = last_seq(&c->journal);
w->data->csum = csum_set(w->data);
@ -859,6 +838,7 @@ static struct journal_write *journal_wait_for_write(struct cache_set *c,
size_t sectors;
struct closure cl;
bool wait = false;
struct cache *ca = c->cache;
closure_init_stack(&cl);
@ -868,10 +848,10 @@ static struct journal_write *journal_wait_for_write(struct cache_set *c,
struct journal_write *w = c->journal.cur;
sectors = __set_blocks(w->data, w->data->keys + nkeys,
block_bytes(c)) * c->sb.block_size;
block_bytes(ca)) * ca->sb.block_size;
if (sectors <= min_t(size_t,
c->journal.blocks_free * c->sb.block_size,
c->journal.blocks_free * ca->sb.block_size,
PAGE_SECTORS << JSET_BITS))
return w;
@ -936,7 +916,7 @@ atomic_t *bch_journal(struct cache_set *c,
if (unlikely(test_bit(CACHE_SET_IO_DISABLE, &c->flags)))
return NULL;
if (!CACHE_SYNC(&c->sb))
if (!CACHE_SYNC(&c->cache->sb))
return NULL;
w = journal_wait_for_write(c, bch_keylist_nkeys(keys));

56
drivers/md/bcache/movinggc.c
View File

@ -196,50 +196,48 @@ static unsigned int bucket_heap_top(struct cache *ca)
void bch_moving_gc(struct cache_set *c)
{
struct cache *ca;
struct cache *ca = c->cache;
struct bucket *b;
unsigned int i;
unsigned long sectors_to_move, reserve_sectors;
if (!c->copy_gc_enabled)
return;
mutex_lock(&c->bucket_lock);
for_each_cache(ca, c, i) {
unsigned long sectors_to_move = 0;
unsigned long reserve_sectors = ca->sb.bucket_size *
sectors_to_move = 0;
reserve_sectors = ca->sb.bucket_size *
fifo_used(&ca->free[RESERVE_MOVINGGC]);
ca->heap.used = 0;
ca->heap.used = 0;
for_each_bucket(b, ca) {
if (GC_MARK(b) == GC_MARK_METADATA ||
!GC_SECTORS_USED(b) ||
GC_SECTORS_USED(b) == ca->sb.bucket_size ||
atomic_read(&b->pin))
continue;
for_each_bucket(b, ca) {
if (GC_MARK(b) == GC_MARK_METADATA ||
!GC_SECTORS_USED(b) ||
GC_SECTORS_USED(b) == ca->sb.bucket_size ||
atomic_read(&b->pin))
continue;
if (!heap_full(&ca->heap)) {
sectors_to_move += GC_SECTORS_USED(b);
heap_add(&ca->heap, b, bucket_cmp);
} else if (bucket_cmp(b, heap_peek(&ca->heap))) {
sectors_to_move -= bucket_heap_top(ca);
sectors_to_move += GC_SECTORS_USED(b);
if (!heap_full(&ca->heap)) {
sectors_to_move += GC_SECTORS_USED(b);
heap_add(&ca->heap, b, bucket_cmp);
} else if (bucket_cmp(b, heap_peek(&ca->heap))) {
sectors_to_move -= bucket_heap_top(ca);
sectors_to_move += GC_SECTORS_USED(b);
ca->heap.data[0] = b;
heap_sift(&ca->heap, 0, bucket_cmp);
}
ca->heap.data[0] = b;
heap_sift(&ca->heap, 0, bucket_cmp);
}
while (sectors_to_move > reserve_sectors) {
heap_pop(&ca->heap, b, bucket_cmp);
sectors_to_move -= GC_SECTORS_USED(b);
}
while (heap_pop(&ca->heap, b, bucket_cmp))
SET_GC_MOVE(b, 1);
}
while (sectors_to_move > reserve_sectors) {
heap_pop(&ca->heap, b, bucket_cmp);
sectors_to_move -= GC_SECTORS_USED(b);
}
while (heap_pop(&ca->heap, b, bucket_cmp))
SET_GC_MOVE(b, 1);
mutex_unlock(&c->bucket_lock);
c->moving_gc_keys.last_scanned = ZERO_KEY;

6
drivers/md/bcache/request.c
View File

@ -99,7 +99,7 @@ static int bch_keylist_realloc(struct keylist *l, unsigned int u64s,
* bch_data_insert_keys() will insert the keys created so far
* and finish the rest when the keylist is empty.
*/
if (newsize * sizeof(uint64_t) > block_bytes(c) - sizeof(struct jset))
if (newsize * sizeof(uint64_t) > block_bytes(c->cache) - sizeof(struct jset))
return -ENOMEM;
return __bch_keylist_realloc(l, u64s);
@ -394,8 +394,8 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
goto skip;
}
if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) ||
bio_sectors(bio) & (c->sb.block_size - 1)) {
if (bio->bi_iter.bi_sector & (c->cache->sb.block_size - 1) ||
bio_sectors(bio) & (c->cache->sb.block_size - 1)) {
pr_debug("skipping unaligned io\n");
goto skip;
}

244
drivers/md/bcache/super.c
View File

@ -343,34 +343,25 @@ static void bcache_write_super_unlock(struct closure *cl)
void bcache_write_super(struct cache_set *c)
{
struct closure *cl = &c->sb_write;
struct cache *ca;
unsigned int i, version = BCACHE_SB_VERSION_CDEV_WITH_UUID;
struct cache *ca = c->cache;
struct bio *bio = &ca->sb_bio;
unsigned int version = BCACHE_SB_VERSION_CDEV_WITH_UUID;
down(&c->sb_write_mutex);
closure_init(cl, &c->cl);
c->sb.seq++;
ca->sb.seq++;
if (c->sb.version > version)
version = c->sb.version;
if (ca->sb.version < version)
ca->sb.version = version;
for_each_cache(ca, c, i) {
struct bio *bio = &ca->sb_bio;
bio_init(bio, ca->sb_bv, 1);
bio_set_dev(bio, ca->bdev);
bio->bi_end_io = write_super_endio;
bio->bi_private = ca;
ca->sb.version = version;
ca->sb.seq = c->sb.seq;
ca->sb.last_mount = c->sb.last_mount;
SET_CACHE_SYNC(&ca->sb, CACHE_SYNC(&c->sb));
bio_init(bio, ca->sb_bv, 1);
bio_set_dev(bio, ca->bdev);
bio->bi_end_io = write_super_endio;
bio->bi_private = ca;
closure_get(cl);
__write_super(&ca->sb, ca->sb_disk, bio);
}
closure_get(cl);
__write_super(&ca->sb, ca->sb_disk, bio);
closure_return_with_destructor(cl, bcache_write_super_unlock);
}
@ -480,22 +471,21 @@ static int __uuid_write(struct cache_set *c)
{
BKEY_PADDED(key) k;
struct closure cl;
struct cache *ca;
struct cache *ca = c->cache;
unsigned int size;
closure_init_stack(&cl);
lockdep_assert_held(&bch_register_lock);
if (bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, 1, true))
if (bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, true))
return 1;
size = meta_bucket_pages(&c->sb) * PAGE_SECTORS;
size = meta_bucket_pages(&ca->sb) * PAGE_SECTORS;
SET_KEY_SIZE(&k.key, size);
uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
closure_sync(&cl);
/* Only one bucket used for uuid write */
ca = PTR_CACHE(c, &k.key, 0);
atomic_long_add(ca->sb.bucket_size, &ca->meta_sectors_written);
bkey_copy(&c->uuid_bucket, &k.key);
@ -772,26 +762,22 @@ static void bcache_device_unlink(struct bcache_device *d)
lockdep_assert_held(&bch_register_lock);
if (d->c && !test_and_set_bit(BCACHE_DEV_UNLINK_DONE, &d->flags)) {
unsigned int i;
struct cache *ca;
struct cache *ca = d->c->cache;
sysfs_remove_link(&d->c->kobj, d->name);
sysfs_remove_link(&d->kobj, "cache");
for_each_cache(ca, d->c, i)
bd_unlink_disk_holder(ca->bdev, d->disk);
bd_unlink_disk_holder(ca->bdev, d->disk);
}
}
static void bcache_device_link(struct bcache_device *d, struct cache_set *c,
const char *name)
{
unsigned int i;
struct cache *ca;
struct cache *ca = c->cache;
int ret;
for_each_cache(ca, d->c, i)
bd_link_disk_holder(ca->bdev, d->disk);
bd_link_disk_holder(ca->bdev, d->disk);
snprintf(d->name, BCACHEDEVNAME_SIZE,
"%s%u", name, d->id);
@ -1196,8 +1182,8 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
struct cached_dev *exist_dc, *t;
int ret = 0;
if ((set_uuid && memcmp(set_uuid, c->sb.set_uuid, 16)) ||
(!set_uuid && memcmp(dc->sb.set_uuid, c->sb.set_uuid, 16)))
if ((set_uuid && memcmp(set_uuid, c->set_uuid, 16)) ||
(!set_uuid && memcmp(dc->sb.set_uuid, c->set_uuid, 16)))
return -ENOENT;
if (dc->disk.c) {
@ -1212,7 +1198,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
return -EINVAL;
}
if (dc->sb.block_size < c->sb.block_size) {
if (dc->sb.block_size < c->cache->sb.block_size) {
/* Will die */
pr_err("Couldn't attach %s: block size less than set's block size\n",
dc->backing_dev_name);
@ -1269,7 +1255,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
u->first_reg = u->last_reg = rtime;
bch_uuid_write(c);
memcpy(dc->sb.set_uuid, c->sb.set_uuid, 16);
memcpy(dc->sb.set_uuid, c->set_uuid, 16);
SET_BDEV_STATE(&dc->sb, BDEV_STATE_CLEAN);
bch_write_bdev_super(dc, &cl);
@ -1331,7 +1317,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
pr_info("Caching %s as %s on set %pU\n",
dc->backing_dev_name,
dc->disk.disk->disk_name,
dc->disk.c->sb.set_uuid);
dc->disk.c->set_uuid);
return 0;
}
@ -1534,7 +1520,7 @@ static int flash_dev_run(struct cache_set *c, struct uuid_entry *u)
kobject_init(&d->kobj, &bch_flash_dev_ktype);
if (bcache_device_init(d, block_bytes(c), u->sectors,
if (bcache_device_init(d, block_bytes(c->cache), u->sectors,
NULL, &bcache_flash_ops))
goto err;
@ -1638,7 +1624,7 @@ bool bch_cache_set_error(struct cache_set *c, const char *fmt, ...)
vaf.va = &args;
pr_err("error on %pU: %pV, disabling caching\n",
c->sb.set_uuid, &vaf);
c->set_uuid, &vaf);
va_end(args);
@ -1662,7 +1648,6 @@ static void cache_set_free(struct closure *cl)
{
struct cache_set *c = container_of(cl, struct cache_set, cl);
struct cache *ca;
unsigned int i;
debugfs_remove(c->debug);
@ -1671,15 +1656,16 @@ static void cache_set_free(struct closure *cl)
bch_journal_free(c);
mutex_lock(&bch_register_lock);
for_each_cache(ca, c, i)
if (ca) {
ca->set = NULL;
c->cache[ca->sb.nr_this_dev] = NULL;
kobject_put(&ca->kobj);
}
bch_bset_sort_state_free(&c->sort);
free_pages((unsigned long) c->uuids, ilog2(meta_bucket_pages(&c->sb)));
free_pages((unsigned long) c->uuids, ilog2(meta_bucket_pages(&c->cache->sb)));
ca = c->cache;
if (ca) {
ca->set = NULL;
c->cache = NULL;
kobject_put(&ca->kobj);
}
if (c->moving_gc_wq)
destroy_workqueue(c->moving_gc_wq);
@ -1692,7 +1678,7 @@ static void cache_set_free(struct closure *cl)
list_del(&c->list);
mutex_unlock(&bch_register_lock);
pr_info("Cache set %pU unregistered\n", c->sb.set_uuid);
pr_info("Cache set %pU unregistered\n", c->set_uuid);
wake_up(&unregister_wait);
closure_debug_destroy(&c->cl);
@ -1702,9 +1688,8 @@ static void cache_set_free(struct closure *cl)
static void cache_set_flush(struct closure *cl)
{
struct cache_set *c = container_of(cl, struct cache_set, caching);
struct cache *ca;
struct cache *ca = c->cache;
struct btree *b;
unsigned int i;
bch_cache_accounting_destroy(&c->accounting);
@ -1729,9 +1714,8 @@ static void cache_set_flush(struct closure *cl)
mutex_unlock(&b->write_lock);
}
for_each_cache(ca, c, i)
if (ca->alloc_thread)
kthread_stop(ca->alloc_thread);
if (ca->alloc_thread)
kthread_stop(ca->alloc_thread);
if (c->journal.cur) {
cancel_delayed_work_sync(&c->journal.work);
@ -1764,7 +1748,7 @@ static void conditional_stop_bcache_device(struct cache_set *c,
{
if (dc->stop_when_cache_set_failed == BCH_CACHED_DEV_STOP_ALWAYS) {
pr_warn("stop_when_cache_set_failed of %s is \"always\", stop it for failed cache set %pU.\n",
d->disk->disk_name, c->sb.set_uuid);
d->disk->disk_name, c->set_uuid);
bcache_device_stop(d);
} else if (atomic_read(&dc->has_dirty)) {
/*
@ -1841,15 +1825,13 @@ void bch_cache_set_unregister(struct cache_set *c)
bch_cache_set_stop(c);
}
#define alloc_bucket_pages(gfp, c) \
((void *) __get_free_pages(__GFP_ZERO|__GFP_COMP|gfp, ilog2(bucket_pages(c))))
#define alloc_meta_bucket_pages(gfp, sb) \
((void *) __get_free_pages(__GFP_ZERO|__GFP_COMP|gfp, ilog2(meta_bucket_pages(sb))))
struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
{
int iter_size;
struct cache *ca = container_of(sb, struct cache, sb);
struct cache_set *c = kzalloc(sizeof(struct cache_set), GFP_KERNEL);
if (!c)
@ -1871,24 +1853,16 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
bch_cache_accounting_init(&c->accounting, &c->cl);
memcpy(c->sb.set_uuid, sb->set_uuid, 16);
c->sb.block_size = sb->block_size;
c->sb.bucket_size = sb->bucket_size;
c->sb.nr_in_set = sb->nr_in_set;
c->sb.last_mount = sb->last_mount;
c->sb.version = sb->version;
if (c->sb.version >= BCACHE_SB_VERSION_CDEV_WITH_FEATURES) {
c->sb.feature_compat = sb->feature_compat;
c->sb.feature_ro_compat = sb->feature_ro_compat;
c->sb.feature_incompat = sb->feature_incompat;
}
memcpy(c->set_uuid, sb->set_uuid, 16);
c->cache = ca;
c->cache->set = c;
c->bucket_bits = ilog2(sb->bucket_size);
c->block_bits = ilog2(sb->block_size);
c->nr_uuids = meta_bucket_bytes(&c->sb) / sizeof(struct uuid_entry);
c->nr_uuids = meta_bucket_bytes(sb) / sizeof(struct uuid_entry);
c->devices_max_used = 0;
atomic_set(&c->attached_dev_nr, 0);
c->btree_pages = meta_bucket_pages(&c->sb);
c->btree_pages = meta_bucket_pages(sb);
if (c->btree_pages > BTREE_MAX_PAGES)
c->btree_pages = max_t(int, c->btree_pages / 4,
BTREE_MAX_PAGES);
@ -1926,7 +1900,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
if (mempool_init_kmalloc_pool(&c->bio_meta, 2,
sizeof(struct bbio) +
sizeof(struct bio_vec) * meta_bucket_pages(&c->sb)))
sizeof(struct bio_vec) * meta_bucket_pages(sb)))
goto err;
if (mempool_init_kmalloc_pool(&c->fill_iter, 1, iter_size))
@ -1936,7 +1910,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
BIOSET_NEED_BVECS|BIOSET_NEED_RESCUER))
goto err;
c->uuids = alloc_meta_bucket_pages(GFP_KERNEL, &c->sb);
c->uuids = alloc_meta_bucket_pages(GFP_KERNEL, sb);
if (!c->uuids)
goto err;
@ -1972,19 +1946,17 @@ static int run_cache_set(struct cache_set *c)
{
const char *err = "cannot allocate memory";
struct cached_dev *dc, *t;
struct cache *ca;
struct cache *ca = c->cache;
struct closure cl;
unsigned int i;
LIST_HEAD(journal);
struct journal_replay *l;
closure_init_stack(&cl);
for_each_cache(ca, c, i)
c->nbuckets += ca->sb.nbuckets;
c->nbuckets = ca->sb.nbuckets;
set_gc_sectors(c);
if (CACHE_SYNC(&c->sb)) {
if (CACHE_SYNC(&c->cache->sb)) {
struct bkey *k;
struct jset *j;
@ -2001,10 +1973,8 @@ static int run_cache_set(struct cache_set *c)
j = &list_entry(journal.prev, struct journal_replay, list)->j;
err = "IO error reading priorities";
for_each_cache(ca, c, i) {
if (prio_read(ca, j->prio_bucket[ca->sb.nr_this_dev]))
goto err;
}
if (prio_read(ca, j->prio_bucket[ca->sb.nr_this_dev]))
goto err;
/*
* If prio_read() fails it'll call cache_set_error and we'll
@ -2048,9 +2018,8 @@ static int run_cache_set(struct cache_set *c)
bch_journal_next(&c->journal);
err = "error starting allocator thread";
for_each_cache(ca, c, i)
if (bch_cache_allocator_start(ca))
goto err;
if (bch_cache_allocator_start(ca))
goto err;
/*
* First place it's safe to allocate: btree_check() and
@ -2069,28 +2038,23 @@ static int run_cache_set(struct cache_set *c)
if (bch_journal_replay(c, &journal))
goto err;
} else {
unsigned int j;
pr_notice("invalidating existing data\n");
ca->sb.keys = clamp_t(int, ca->sb.nbuckets >> 7,
2, SB_JOURNAL_BUCKETS);
for_each_cache(ca, c, i) {
unsigned int j;
ca->sb.keys = clamp_t(int, ca->sb.nbuckets >> 7,
2, SB_JOURNAL_BUCKETS);
for (j = 0; j < ca->sb.keys; j++)
ca->sb.d[j] = ca->sb.first_bucket + j;
}
for (j = 0; j < ca->sb.keys; j++)
ca->sb.d[j] = ca->sb.first_bucket + j;
bch_initial_gc_finish(c);
err = "error starting allocator thread";
for_each_cache(ca, c, i)
if (bch_cache_allocator_start(ca))
goto err;
if (bch_cache_allocator_start(ca))
goto err;
mutex_lock(&c->bucket_lock);
for_each_cache(ca, c, i)
bch_prio_write(ca, true);
bch_prio_write(ca, true);
mutex_unlock(&c->bucket_lock);
err = "cannot allocate new UUID bucket";
@ -2115,7 +2079,7 @@ static int run_cache_set(struct cache_set *c)
* everything is set up - fortunately journal entries won't be
* written until the SET_CACHE_SYNC() here:
*/
SET_CACHE_SYNC(&c->sb, true);
SET_CACHE_SYNC(&c->cache->sb, true);
bch_journal_next(&c->journal);
bch_journal_meta(c, &cl);
@ -2126,7 +2090,7 @@ static int run_cache_set(struct cache_set *c)
goto err;
closure_sync(&cl);
c->sb.last_mount = (u32)ktime_get_real_seconds();
c->cache->sb.last_mount = (u32)ktime_get_real_seconds();
bcache_write_super(c);
list_for_each_entry_safe(dc, t, &uncached_devices, list)
@ -2150,13 +2114,6 @@ err:
return -EIO;
}
static bool can_attach_cache(struct cache *ca, struct cache_set *c)
{
return ca->sb.block_size == c->sb.block_size &&
ca->sb.bucket_size == c->sb.bucket_size &&
ca->sb.nr_in_set == c->sb.nr_in_set;
}
static const char *register_cache_set(struct cache *ca)
{
char buf[12];
@ -2164,16 +2121,10 @@ static const char *register_cache_set(struct cache *ca)
struct cache_set *c;
list_for_each_entry(c, &bch_cache_sets, list)
if (!memcmp(c->sb.set_uuid, ca->sb.set_uuid, 16)) {
if (c->cache[ca->sb.nr_this_dev])
if (!memcmp(c->set_uuid, ca->sb.set_uuid, 16)) {
if (c->cache)
return "duplicate cache set member";
if (!can_attach_cache(ca, c))
return "cache sb does not match set";
if (!CACHE_SYNC(&ca->sb))
SET_CACHE_SYNC(&c->sb, false);
goto found;
}
@ -2182,7 +2133,7 @@ static const char *register_cache_set(struct cache *ca)
return err;
err = "error creating kobject";
if (kobject_add(&c->kobj, bcache_kobj, "%pU", c->sb.set_uuid) ||
if (kobject_add(&c->kobj, bcache_kobj, "%pU", c->set_uuid) ||
kobject_add(&c->internal, &c->kobj, "internal"))
goto err;
@ -2198,31 +2149,13 @@ found:
sysfs_create_link(&c->kobj, &ca->kobj, buf))
goto err;
/*
* A special case is both ca->sb.seq and c->sb.seq are 0,
* such condition happens on a new created cache device whose
* super block is never flushed yet. In this case c->sb.version
* and other members should be updated too, otherwise we will
* have a mistaken super block version in cache set.
*/
if (ca->sb.seq > c->sb.seq || c->sb.seq == 0) {
c->sb.version = ca->sb.version;
memcpy(c->sb.set_uuid, ca->sb.set_uuid, 16);
c->sb.flags = ca->sb.flags;
c->sb.seq = ca->sb.seq;
pr_debug("set version = %llu\n", c->sb.version);
}
kobject_get(&ca->kobj);
ca->set = c;
ca->set->cache[ca->sb.nr_this_dev] = ca;
c->cache_by_alloc[c->caches_loaded++] = ca;
ca->set->cache = ca;
if (c->caches_loaded == c->sb.nr_in_set) {
err = "failed to run cache set";
if (run_cache_set(c) < 0)
goto err;
}
err = "failed to run cache set";
if (run_cache_set(c) < 0)
goto err;
return NULL;
err:
@ -2239,8 +2172,8 @@ void bch_cache_release(struct kobject *kobj)
unsigned int i;
if (ca->set) {
BUG_ON(ca->set->cache[ca->sb.nr_this_dev] != ca);
ca->set->cache[ca->sb.nr_this_dev] = NULL;
BUG_ON(ca->set->cache != ca);
ca->set->cache = NULL;
}
free_pages((unsigned long) ca->disk_buckets, ilog2(meta_bucket_pages(&ca->sb)));
@ -2448,7 +2381,6 @@ static ssize_t bch_pending_bdevs_cleanup(struct kobject *k,
kobj_attribute_write(register, register_bcache);
kobj_attribute_write(register_quiet, register_bcache);
kobj_attribute_write(register_async, register_bcache);
kobj_attribute_write(pendings_cleanup, bch_pending_bdevs_cleanup);
static bool bch_is_open_backing(struct block_device *bdev)
@ -2469,13 +2401,14 @@ static bool bch_is_open_backing(struct block_device *bdev)
static bool bch_is_open_cache(struct block_device *bdev)
{
struct cache_set *c, *tc;
struct cache *ca;
unsigned int i;
list_for_each_entry_safe(c, tc, &bch_cache_sets, list)
for_each_cache(ca, c, i)
if (ca->bdev == bdev)
return true;
list_for_each_entry_safe(c, tc, &bch_cache_sets, list) {
struct cache *ca = c->cache;
if (ca->bdev == bdev)
return true;
}
return false;
}
@ -2571,6 +2504,11 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
struct cache_sb_disk *sb_disk;
struct block_device *bdev;
ssize_t ret;
bool async_registration = false;
#ifdef CONFIG_BCACHE_ASYNC_REGISTRATION
async_registration = true;
#endif
ret = -EBUSY;
err = "failed to reference bcache module";
@ -2624,7 +2562,8 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
goto out_blkdev_put;
err = "failed to register device";
if (attr == &ksysfs_register_async) {
if (async_registration) {
/* register in asynchronous way */
struct async_reg_args *args =
kzalloc(sizeof(struct async_reg_args), GFP_KERNEL);
@ -2719,7 +2658,7 @@ static ssize_t bch_pending_bdevs_cleanup(struct kobject *k,
list_for_each_entry_safe(pdev, tpdev, &pending_devs, list) {
list_for_each_entry_safe(c, tc, &bch_cache_sets, list) {
char *pdev_set_uuid = pdev->dc->sb.set_uuid;
char *set_uuid = c->sb.uuid;
char *set_uuid = c->set_uuid;
if (!memcmp(pdev_set_uuid, set_uuid, 16)) {
list_del(&pdev->list);
@ -2887,9 +2826,6 @@ static int __init bcache_init(void)
static const struct attribute *files[] = {
&ksysfs_register.attr,
&ksysfs_register_quiet.attr,
#ifdef CONFIG_BCACHE_ASYNC_REGISTRATION
&ksysfs_register_async.attr,
#endif
&ksysfs_pendings_cleanup.attr,
NULL
};

10
drivers/md/bcache/sysfs.c
View File

@ -711,10 +711,10 @@ SHOW(__bch_cache_set)
{
struct cache_set *c = container_of(kobj, struct cache_set, kobj);
sysfs_print(synchronous, CACHE_SYNC(&c->sb));
sysfs_print(synchronous, CACHE_SYNC(&c->cache->sb));
sysfs_print(journal_delay_ms, c->journal_delay_ms);
sysfs_hprint(bucket_size, bucket_bytes(c));
sysfs_hprint(block_size, block_bytes(c));
sysfs_hprint(bucket_size, bucket_bytes(c->cache));
sysfs_hprint(block_size, block_bytes(c->cache));
sysfs_print(tree_depth, c->root->level);
sysfs_print(root_usage_percent, bch_root_usage(c));
@ -812,8 +812,8 @@ STORE(__bch_cache_set)
if (attr == &sysfs_synchronous) {
bool sync = strtoul_or_return(buf);
if (sync != CACHE_SYNC(&c->sb)) {
SET_CACHE_SYNC(&c->sb, sync);
if (sync != CACHE_SYNC(&c->cache->sb)) {
SET_CACHE_SYNC(&c->cache->sb, sync);
bcache_write_super(c);
}
}

2
drivers/md/bcache/writeback.c
View File

@ -35,7 +35,7 @@ static uint64_t __calc_target_rate(struct cached_dev *dc)
* This is the size of the cache, minus the amount used for
* flash-only devices
*/
uint64_t cache_sectors = c->nbuckets * c->sb.bucket_size -
uint64_t cache_sectors = c->nbuckets * c->cache->sb.bucket_size -
atomic_long_read(&c->flash_dev_dirty_sectors);
/*

16
drivers/md/md-bitmap.c
View File

@ -357,11 +357,12 @@ static int read_page(struct file *file, unsigned long index,
struct inode *inode = file_inode(file);
struct buffer_head *bh;
sector_t block, blk_cur;
unsigned long blocksize = i_blocksize(inode);
pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE,
(unsigned long long)index << PAGE_SHIFT);
bh = alloc_page_buffers(page, 1<<inode->i_blkbits, false);
bh = alloc_page_buffers(page, blocksize, false);
if (!bh) {
ret = -ENOMEM;
goto out;
@ -383,10 +384,10 @@ static int read_page(struct file *file, unsigned long index,
bh->b_blocknr = block;
bh->b_bdev = inode->i_sb->s_bdev;
if (count < (1<<inode->i_blkbits))
if (count < blocksize)
count = 0;
else
count -= (1<<inode->i_blkbits);
count -= blocksize;
bh->b_end_io = end_bitmap_write;
bh->b_private = bitmap;
@ -605,8 +606,8 @@ re_read:
if (bitmap->cluster_slot >= 0) {
sector_t bm_blocks = bitmap->mddev->resync_max_sectors;
sector_div(bm_blocks,
bitmap->mddev->bitmap_info.chunksize >> 9);
bm_blocks = DIV_ROUND_UP_SECTOR_T(bm_blocks,
(bitmap->mddev->bitmap_info.chunksize >> 9));
/* bits to bytes */
bm_blocks = ((bm_blocks+7) >> 3) + sizeof(bitmap_super_t);
/* to 4k blocks */
@ -1367,7 +1368,7 @@ __acquires(bitmap->lock)
if (bitmap->bp[page].hijacked ||
bitmap->bp[page].map == NULL)
csize = ((sector_t)1) << (bitmap->chunkshift +
PAGE_COUNTER_SHIFT - 1);
PAGE_COUNTER_SHIFT);
else
csize = ((sector_t)1) << bitmap->chunkshift;
*blocks = csize - (offset & (csize - 1));
@ -1949,6 +1950,7 @@ out:
}
EXPORT_SYMBOL_GPL(md_bitmap_load);
/* caller need to free returned bitmap with md_bitmap_free() */
struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)
{
int rv = 0;
@ -2012,6 +2014,7 @@ int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
md_bitmap_unplug(mddev->bitmap);
*low = lo;
*high = hi;
md_bitmap_free(bitmap);
return rv;
}
@ -2615,4 +2618,3 @@ struct attribute_group md_bitmap_group = {
.name = "bitmap",
.attrs = md_bitmap_attrs,
};

1
drivers/md/md-cluster.c
View File

@ -1166,6 +1166,7 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
* can't resize bitmap
*/
goto out;
md_bitmap_free(bitmap);
}
return 0;

22
drivers/md/md.c
View File

@ -8582,6 +8582,26 @@ void md_write_end(struct mddev *mddev)
EXPORT_SYMBOL(md_write_end);
/* This is used by raid0 and raid10 */
void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
struct bio *bio, sector_t start, sector_t size)
{
struct bio *discard_bio = NULL;
if (__blkdev_issue_discard(rdev->bdev, start, size,
GFP_NOIO, 0, &discard_bio) || !discard_bio)
return;
bio_chain(discard_bio, bio);
bio_clone_blkg_association(discard_bio, bio);
if (mddev->gendisk)
trace_block_bio_remap(bdev_get_queue(rdev->bdev),
discard_bio, disk_devt(mddev->gendisk),
bio->bi_iter.bi_sector);
submit_bio_noacct(discard_bio);
}
EXPORT_SYMBOL(md_submit_discard_bio);
/* md_allow_write(mddev)
* Calling this ensures that the array is marked 'active' so that writes
* may proceed without blocking. It is important to call this before
@ -9544,7 +9564,7 @@ static int __init md_init(void)
goto err_misc_wq;
md_rdev_misc_wq = alloc_workqueue("md_rdev_misc", 0, 0);
if (!md_misc_wq)
if (!md_rdev_misc_wq)
goto err_rdev_misc_wq;
if ((ret = register_blkdev(MD_MAJOR, "md")) < 0)

2
drivers/md/md.h
View File

@ -713,6 +713,8 @@ extern void md_write_end(struct mddev *mddev);
extern void md_done_sync(struct mddev *mddev, int blocks, int ok);
extern void md_error(struct mddev *mddev, struct md_rdev *rdev);
extern void md_finish_reshape(struct mddev *mddev);
extern void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
struct bio *bio, sector_t start, sector_t size);
extern bool __must_check md_flush_request(struct mddev *mddev, struct bio *bio);
extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,

31
drivers/md/raid0.c
View File

@ -426,23 +426,6 @@ static void raid0_free(struct mddev *mddev, void *priv)
kfree(conf);
}
/*
* Is io distribute over 1 or more chunks ?
*/
static inline int is_io_in_chunk_boundary(struct mddev *mddev,
unsigned int chunk_sects, struct bio *bio)
{
if (likely(is_power_of_2(chunk_sects))) {
return chunk_sects >=
((bio->bi_iter.bi_sector & (chunk_sects-1))
+ bio_sectors(bio));
} else{
sector_t sector = bio->bi_iter.bi_sector;
return chunk_sects >= (sector_div(sector, chunk_sects)
+ bio_sectors(bio));
}
}
static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
{
struct r0conf *conf = mddev->private;
@ -494,7 +477,6 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
for (disk = 0; disk < zone->nb_dev; disk++) {
sector_t dev_start, dev_end;
struct bio *discard_bio = NULL;
struct md_rdev *rdev;
if (disk < start_disk_index)
@ -517,18 +499,9 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
rdev = conf->devlist[(zone - conf->strip_zone) *
conf->strip_zone[0].nb_dev + disk];
if (__blkdev_issue_discard(rdev->bdev,
md_submit_discard_bio(mddev, rdev, bio,
dev_start + zone->dev_start + rdev->data_offset,
dev_end - dev_start, GFP_NOIO, 0, &discard_bio) ||
!discard_bio)
continue;
bio_chain(discard_bio, bio);
bio_clone_blkg_association(discard_bio, bio);
if (mddev->gendisk)
trace_block_bio_remap(bdev_get_queue(rdev->bdev),
discard_bio, disk_devt(mddev->gendisk),
bio->bi_iter.bi_sector);
submit_bio_noacct(discard_bio);
dev_end - dev_start);
}
bio_endio(bio);
}

431
drivers/md/raid10.c
View File

@ -91,7 +91,7 @@ static inline struct r10bio *get_resync_r10bio(struct bio *bio)
static void * r10bio_pool_alloc(gfp_t gfp_flags, void *data)
{
struct r10conf *conf = data;
int size = offsetof(struct r10bio, devs[conf->copies]);
int size = offsetof(struct r10bio, devs[conf->geo.raid_disks]);
/* allocate a r10bio with room for raid_disks entries in the
* bios array */
@ -238,7 +238,7 @@ static void put_all_bios(struct r10conf *conf, struct r10bio *r10_bio)
{
int i;
for (i = 0; i < conf->copies; i++) {
for (i = 0; i < conf->geo.raid_disks; i++) {
struct bio **bio = & r10_bio->devs[i].bio;
if (!BIO_SPECIAL(*bio))
bio_put(*bio);
@ -327,7 +327,7 @@ static int find_bio_disk(struct r10conf *conf, struct r10bio *r10_bio,
int slot;
int repl = 0;
for (slot = 0; slot < conf->copies; slot++) {
for (slot = 0; slot < conf->geo.raid_disks; slot++) {
if (r10_bio->devs[slot].bio == bio)
break;
if (r10_bio->devs[slot].repl_bio == bio) {
@ -336,7 +336,6 @@ static int find_bio_disk(struct r10conf *conf, struct r10bio *r10_bio,
}
}
BUG_ON(slot == conf->copies);
update_head_pos(slot, r10_bio);
if (slotp)
@ -1276,12 +1275,75 @@ static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio,
}
}
static void wait_blocked_dev(struct mddev *mddev, struct r10bio *r10_bio)
{
int i;
struct r10conf *conf = mddev->private;
struct md_rdev *blocked_rdev;
retry_wait:
blocked_rdev = NULL;
rcu_read_lock();
for (i = 0; i < conf->copies; i++) {
struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);
struct md_rdev *rrdev = rcu_dereference(
conf->mirrors[i].replacement);
if (rdev == rrdev)
rrdev = NULL;
if (rdev && unlikely(test_bit(Blocked, &rdev->flags))) {
atomic_inc(&rdev->nr_pending);
blocked_rdev = rdev;
break;
}
if (rrdev && unlikely(test_bit(Blocked, &rrdev->flags))) {
atomic_inc(&rrdev->nr_pending);
blocked_rdev = rrdev;
break;
}
if (rdev && test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
sector_t dev_sector = r10_bio->devs[i].addr;
int bad_sectors;
int is_bad;
/* Discard request doesn't care the write result
* so it doesn't need to wait blocked disk here.
*/
if (!r10_bio->sectors)
continue;
is_bad = is_badblock(rdev, dev_sector, r10_bio->sectors,
&first_bad, &bad_sectors);
if (is_bad < 0) {
/* Mustn't write here until the bad block
* is acknowledged
*/
atomic_inc(&rdev->nr_pending);
set_bit(BlockedBadBlocks, &rdev->flags);
blocked_rdev = rdev;
break;
}
}
}
rcu_read_unlock();
if (unlikely(blocked_rdev)) {
/* Have to wait for this device to get unblocked, then retry */
allow_barrier(conf);
raid10_log(conf->mddev, "%s wait rdev %d blocked",
__func__, blocked_rdev->raid_disk);
md_wait_for_blocked_rdev(blocked_rdev, mddev);
wait_barrier(conf);
goto retry_wait;
}
}
static void raid10_write_request(struct mddev *mddev, struct bio *bio,
struct r10bio *r10_bio)
{
struct r10conf *conf = mddev->private;
int i;
struct md_rdev *blocked_rdev;
sector_t sectors;
int max_sectors;
@ -1339,8 +1401,9 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
r10_bio->read_slot = -1; /* make sure repl_bio gets freed */
raid10_find_phys(conf, r10_bio);
retry_write:
blocked_rdev = NULL;
wait_blocked_dev(mddev, r10_bio);
rcu_read_lock();
max_sectors = r10_bio->sectors;
@ -1351,16 +1414,6 @@ retry_write:
conf->mirrors[d].replacement);
if (rdev == rrdev)
rrdev = NULL;
if (rdev && unlikely(test_bit(Blocked, &rdev->flags))) {
atomic_inc(&rdev->nr_pending);
blocked_rdev = rdev;
break;
}
if (rrdev && unlikely(test_bit(Blocked, &rrdev->flags))) {
atomic_inc(&rrdev->nr_pending);
blocked_rdev = rrdev;
break;
}
if (rdev && (test_bit(Faulty, &rdev->flags)))
rdev = NULL;
if (rrdev && (test_bit(Faulty, &rrdev->flags)))
@ -1381,15 +1434,6 @@ retry_write:
is_bad = is_badblock(rdev, dev_sector, max_sectors,
&first_bad, &bad_sectors);
if (is_bad < 0) {
/* Mustn't write here until the bad block
* is acknowledged
*/
atomic_inc(&rdev->nr_pending);
set_bit(BlockedBadBlocks, &rdev->flags);
blocked_rdev = rdev;
break;
}
if (is_bad && first_bad <= dev_sector) {
/* Cannot write here at all */
bad_sectors -= (dev_sector - first_bad);
@ -1425,35 +1469,6 @@ retry_write:
}
rcu_read_unlock();
if (unlikely(blocked_rdev)) {
/* Have to wait for this device to get unblocked, then retry */
int j;
int d;
for (j = 0; j < i; j++) {
if (r10_bio->devs[j].bio) {
d = r10_bio->devs[j].devnum;
rdev_dec_pending(conf->mirrors[d].rdev, mddev);
}
if (r10_bio->devs[j].repl_bio) {
struct md_rdev *rdev;
d = r10_bio->devs[j].devnum;
rdev = conf->mirrors[d].replacement;
if (!rdev) {
/* Race with remove_disk */
smp_mb();
rdev = conf->mirrors[d].rdev;
}
rdev_dec_pending(rdev, mddev);
}
}
allow_barrier(conf);
raid10_log(conf->mddev, "wait rdev %d blocked", blocked_rdev->raid_disk);
md_wait_for_blocked_rdev(blocked_rdev, mddev);
wait_barrier(conf);
goto retry_write;
}
if (max_sectors < r10_bio->sectors)
r10_bio->sectors = max_sectors;
@ -1493,7 +1508,7 @@ static void __make_request(struct mddev *mddev, struct bio *bio, int sectors)
r10_bio->mddev = mddev;
r10_bio->sector = bio->bi_iter.bi_sector;
r10_bio->state = 0;
memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * conf->copies);
memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * conf->geo.raid_disks);
if (bio_data_dir(bio) == READ)
raid10_read_request(mddev, bio, r10_bio);
@ -1501,6 +1516,296 @@ static void __make_request(struct mddev *mddev, struct bio *bio, int sectors)
raid10_write_request(mddev, bio, r10_bio);
}
static struct bio *raid10_split_bio(struct r10conf *conf,
struct bio *bio, sector_t sectors, bool want_first)
{
struct bio *split;
split = bio_split(bio, sectors, GFP_NOIO, &conf->bio_split);
bio_chain(split, bio);
allow_barrier(conf);
if (want_first) {
submit_bio_noacct(bio);
bio = split;
} else
submit_bio_noacct(split);
wait_barrier(conf);
return bio;
}
static void raid_end_discard_bio(struct r10bio *r10bio)
{
struct r10conf *conf = r10bio->mddev->private;
struct r10bio *first_r10bio;
while (atomic_dec_and_test(&r10bio->remaining)) {
allow_barrier(conf);
if (!test_bit(R10BIO_Discard, &r10bio->state)) {
first_r10bio = (struct r10bio *)r10bio->master_bio;
free_r10bio(r10bio);
r10bio = first_r10bio;
} else {
md_write_end(r10bio->mddev);
bio_endio(r10bio->master_bio);
free_r10bio(r10bio);
break;
}
}
}
static void raid10_end_discard_request(struct bio *bio)
{
struct r10bio *r10_bio = bio->bi_private;
struct r10conf *conf = r10_bio->mddev->private;
struct md_rdev *rdev = NULL;
int dev;
int slot, repl;
/*
* We don't care the return value of discard bio
*/
if (!test_bit(R10BIO_Uptodate, &r10_bio->state))
set_bit(R10BIO_Uptodate, &r10_bio->state);
dev = find_bio_disk(conf, r10_bio, bio, &slot, &repl);
if (repl)
rdev = conf->mirrors[dev].replacement;
if (!rdev) {
/* raid10_remove_disk uses smp_mb to make sure rdev is set to
* replacement before setting replacement to NULL. It can read
* rdev first without barrier protect even replacment is NULL
*/
smp_rmb();
rdev = conf->mirrors[dev].rdev;
}
raid_end_discard_bio(r10_bio);
rdev_dec_pending(rdev, conf->mddev);
}
/* There are some limitations to handle discard bio
* 1st, the discard size is bigger than stripe_size*2.
* 2st, if the discard bio spans reshape progress, we use the old way to
* handle discard bio
*/
static int raid10_handle_discard(struct mddev *mddev, struct bio *bio)
{
struct r10conf *conf = mddev->private;
struct geom *geo = &conf->geo;
struct r10bio *r10_bio, *first_r10bio;
int far_copies = geo->far_copies;
bool first_copy = true;
int disk;
sector_t chunk;
unsigned int stripe_size;
sector_t split_size;
sector_t bio_start, bio_end;
sector_t first_stripe_index, last_stripe_index;
sector_t start_disk_offset;
unsigned int start_disk_index;
sector_t end_disk_offset;
unsigned int end_disk_index;
unsigned int remainder;
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
return -EAGAIN;
wait_barrier(conf);
/* Check reshape again to avoid reshape happens after checking
* MD_RECOVERY_RESHAPE and before wait_barrier
*/
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
goto out;
stripe_size = geo->raid_disks << geo->chunk_shift;
bio_start = bio->bi_iter.bi_sector;
bio_end = bio_end_sector(bio);
/* Maybe one discard bio is smaller than strip size or across one stripe
* and discard region is larger than one stripe size. For far offset layout,
* if the discard region is not aligned with stripe size, there is hole
* when we submit discard bio to member disk. For simplicity, we only
* handle discard bio which discard region is bigger than stripe_size*2
*/
if (bio_sectors(bio) < stripe_size*2)
goto out;
/* For far and far offset layout, if bio is not aligned with stripe size,
* it splits the part that is not aligned with strip size.
*/
div_u64_rem(bio_start, stripe_size, &remainder);
if ((far_copies > 1) && remainder) {
split_size = stripe_size - remainder;
bio = raid10_split_bio(conf, bio, split_size, false);
}
div_u64_rem(bio_end, stripe_size, &remainder);
if ((far_copies > 1) && remainder) {
split_size = bio_sectors(bio) - remainder;
bio = raid10_split_bio(conf, bio, split_size, true);
}
bio_start = bio->bi_iter.bi_sector;
bio_end = bio_end_sector(bio);
/* raid10 uses chunk as the unit to store data. It's similar like raid0.
* One stripe contains the chunks from all member disk (one chunk from
* one disk at the same HBA address). For layout detail, see 'man md 4'
*/
chunk = bio_start >> geo->chunk_shift;
chunk *= geo->near_copies;
first_stripe_index = chunk;
start_disk_index = sector_div(first_stripe_index, geo->raid_disks);
if (geo->far_offset)
first_stripe_index *= geo->far_copies;
start_disk_offset = (bio_start & geo->chunk_mask) +
(first_stripe_index << geo->chunk_shift);
chunk = bio_end >> geo->chunk_shift;
chunk *= geo->near_copies;
last_stripe_index = chunk;
end_disk_index = sector_div(last_stripe_index, geo->raid_disks);
if (geo->far_offset)
last_stripe_index *= geo->far_copies;
end_disk_offset = (bio_end & geo->chunk_mask) +
(last_stripe_index << geo->chunk_shift);
retry_discard:
r10_bio = mempool_alloc(&conf->r10bio_pool, GFP_NOIO);
r10_bio->mddev = mddev;
r10_bio->state = 0;
r10_bio->sectors = 0;
memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * geo->raid_disks);
wait_blocked_dev(mddev, r10_bio);
/* For far layout it needs more than one r10bio to cover all regions.
* Inspired by raid10_sync_request, we can use the first r10bio->master_bio
* to record the discard bio. Other r10bio->master_bio record the first
* r10bio. The first r10bio only release after all other r10bios finish.
* The discard bio returns only first r10bio finishes
*/
if (first_copy) {
r10_bio->master_bio = bio;
set_bit(R10BIO_Discard, &r10_bio->state);
first_copy = false;
first_r10bio = r10_bio;
} else
r10_bio->master_bio = (struct bio *)first_r10bio;
rcu_read_lock();
for (disk = 0; disk < geo->raid_disks; disk++) {
struct md_rdev *rdev = rcu_dereference(conf->mirrors[disk].rdev);
struct md_rdev *rrdev = rcu_dereference(
conf->mirrors[disk].replacement);
r10_bio->devs[disk].bio = NULL;
r10_bio->devs[disk].repl_bio = NULL;
if (rdev && (test_bit(Faulty, &rdev->flags)))
rdev = NULL;
if (rrdev && (test_bit(Faulty, &rrdev->flags)))
rrdev = NULL;
if (!rdev && !rrdev)
continue;
if (rdev) {
r10_bio->devs[disk].bio = bio;
atomic_inc(&rdev->nr_pending);
}
if (rrdev) {
r10_bio->devs[disk].repl_bio = bio;
atomic_inc(&rrdev->nr_pending);
}
}
rcu_read_unlock();
atomic_set(&r10_bio->remaining, 1);
for (disk = 0; disk < geo->raid_disks; disk++) {
sector_t dev_start, dev_end;
struct bio *mbio, *rbio = NULL;
struct md_rdev *rdev = rcu_dereference(conf->mirrors[disk].rdev);
struct md_rdev *rrdev = rcu_dereference(
conf->mirrors[disk].replacement);
/*
* Now start to calculate the start and end address for each disk.
* The space between dev_start and dev_end is the discard region.
*
* For dev_start, it needs to consider three conditions:
* 1st, the disk is before start_disk, you can imagine the disk in
* the next stripe. So the dev_start is the start address of next
* stripe.
* 2st, the disk is after start_disk, it means the disk is at the
* same stripe of first disk
* 3st, the first disk itself, we can use start_disk_offset directly
*/
if (disk < start_disk_index)
dev_start = (first_stripe_index + 1) * mddev->chunk_sectors;
else if (disk > start_disk_index)
dev_start = first_stripe_index * mddev->chunk_sectors;
else
dev_start = start_disk_offset;
if (disk < end_disk_index)
dev_end = (last_stripe_index + 1) * mddev->chunk_sectors;
else if (disk > end_disk_index)
dev_end = last_stripe_index * mddev->chunk_sectors;
else
dev_end = end_disk_offset;
/* It only handles discard bio which size is >= stripe size, so
* dev_end > dev_start all the time
*/
if (r10_bio->devs[disk].bio) {
mbio = bio_clone_fast(bio, GFP_NOIO, &mddev->bio_set);
mbio->bi_end_io = raid10_end_discard_request;
mbio->bi_private = r10_bio;
r10_bio->devs[disk].bio = mbio;
r10_bio->devs[disk].devnum = disk;
atomic_inc(&r10_bio->remaining);
md_submit_discard_bio(mddev, rdev, mbio,
dev_start + choose_data_offset(r10_bio, rdev),
dev_end - dev_start);
bio_endio(mbio);
}
if (r10_bio->devs[disk].repl_bio) {
rbio = bio_clone_fast(bio, GFP_NOIO, &mddev->bio_set);
rbio->bi_end_io = raid10_end_discard_request;
rbio->bi_private = r10_bio;
r10_bio->devs[disk].repl_bio = rbio;
r10_bio->devs[disk].devnum = disk;
atomic_inc(&r10_bio->remaining);
md_submit_discard_bio(mddev, rrdev, rbio,
dev_start + choose_data_offset(r10_bio, rrdev),
dev_end - dev_start);
bio_endio(rbio);
}
}
if (!geo->far_offset && --far_copies) {
first_stripe_index += geo->stride >> geo->chunk_shift;
start_disk_offset += geo->stride;
last_stripe_index += geo->stride >> geo->chunk_shift;
end_disk_offset += geo->stride;
atomic_inc(&first_r10bio->remaining);
raid_end_discard_bio(r10_bio);
wait_barrier(conf);
goto retry_discard;
}
raid_end_discard_bio(r10_bio);
return 0;
out:
allow_barrier(conf);
return -EAGAIN;
}
static bool raid10_make_request(struct mddev *mddev, struct bio *bio)
{
struct r10conf *conf = mddev->private;
@ -1515,6 +1820,10 @@ static bool raid10_make_request(struct mddev *mddev, struct bio *bio)
if (!md_write_start(mddev, bio))
return false;
if (unlikely(bio_op(bio) == REQ_OP_DISCARD))
if (!raid10_handle_discard(mddev, bio))
return true;
/*
* If this request crosses a chunk boundary, we need to split
* it.
@ -3754,7 +4063,7 @@ static int raid10_run(struct mddev *mddev)
if (mddev->queue) {
blk_queue_max_discard_sectors(mddev->queue,
mddev->chunk_sectors);
UINT_MAX);
blk_queue_max_write_same_sectors(mddev->queue, 0);
blk_queue_max_write_zeroes_sectors(mddev->queue, 0);
blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
@ -4458,8 +4767,8 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
last = conf->reshape_progress - 1;
sector_nr = last & ~(sector_t)(conf->geo.chunk_mask
& conf->prev.chunk_mask);
if (sector_nr + RESYNC_BLOCK_SIZE/512 < last)
sector_nr = last + 1 - RESYNC_BLOCK_SIZE/512;
if (sector_nr + RESYNC_SECTORS < last)
sector_nr = last + 1 - RESYNC_SECTORS;
} else {
/* 'next' is after the last device address that we
* might write to for this chunk in the new layout
@ -4481,8 +4790,8 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
last = sector_nr | (conf->geo.chunk_mask
& conf->prev.chunk_mask);
if (sector_nr + RESYNC_BLOCK_SIZE/512 <= last)
last = sector_nr + RESYNC_BLOCK_SIZE/512 - 1;
if (sector_nr + RESYNC_SECTORS <= last)
last = sector_nr + RESYNC_SECTORS - 1;
}
if (need_flush ||

1
drivers/md/raid10.h
View File

@ -179,5 +179,6 @@ enum r10bio_state {
R10BIO_Previous,
/* failfast devices did receive failfast requests. */
R10BIO_FailFast,
R10BIO_Discard,
};
#endif

278
drivers/md/raid5.c
View File

@ -448,13 +448,74 @@ out:
return sh;
}
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
static void free_stripe_pages(struct stripe_head *sh)
{
int i;
struct page *p;
/* Have not allocate page pool */
if (!sh->pages)
return;
for (i = 0; i < sh->nr_pages; i++) {
p = sh->pages[i];
if (p)
put_page(p);
sh->pages[i] = NULL;
}
}
static int alloc_stripe_pages(struct stripe_head *sh, gfp_t gfp)
{
int i;
struct page *p;
for (i = 0; i < sh->nr_pages; i++) {
/* The page have allocated. */
if (sh->pages[i])
continue;
p = alloc_page(gfp);
if (!p) {
free_stripe_pages(sh);
return -ENOMEM;
}
sh->pages[i] = p;
}
return 0;
}
static int
init_stripe_shared_pages(struct stripe_head *sh, struct r5conf *conf, int disks)
{
int nr_pages, cnt;
if (sh->pages)
return 0;
/* Each of the sh->dev[i] need one conf->stripe_size */
cnt = PAGE_SIZE / conf->stripe_size;
nr_pages = (disks + cnt - 1) / cnt;
sh->pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
if (!sh->pages)
return -ENOMEM;
sh->nr_pages = nr_pages;
sh->stripes_per_page = cnt;
return 0;
}
#endif
static void shrink_buffers(struct stripe_head *sh)
{
struct page *p;
int i;
int num = sh->raid_conf->pool_size;
#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
for (i = 0; i < num ; i++) {
struct page *p;
WARN_ON(sh->dev[i].page != sh->dev[i].orig_page);
p = sh->dev[i].page;
if (!p)
@ -462,6 +523,11 @@ static void shrink_buffers(struct stripe_head *sh)
sh->dev[i].page = NULL;
put_page(p);
}
#else
for (i = 0; i < num; i++)
sh->dev[i].page = NULL;
free_stripe_pages(sh); /* Free pages */
#endif
}
static int grow_buffers(struct stripe_head *sh, gfp_t gfp)
@ -469,6 +535,7 @@ static int grow_buffers(struct stripe_head *sh, gfp_t gfp)
int i;
int num = sh->raid_conf->pool_size;
#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
for (i = 0; i < num; i++) {
struct page *page;
@ -477,8 +544,18 @@ static int grow_buffers(struct stripe_head *sh, gfp_t gfp)
}
sh->dev[i].page = page;
sh->dev[i].orig_page = page;
sh->dev[i].offset = 0;
}
#else
if (alloc_stripe_pages(sh, gfp))
return -ENOMEM;
for (i = 0; i < num; i++) {
sh->dev[i].page = raid5_get_dev_page(sh, i);
sh->dev[i].orig_page = sh->dev[i].page;
sh->dev[i].offset = raid5_get_page_offset(sh, i);
}
#endif
return 0;
}
@ -1130,7 +1207,7 @@ again:
sh->dev[i].vec.bv_page = sh->dev[i].page;
bi->bi_vcnt = 1;
bi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf);
bi->bi_io_vec[0].bv_offset = 0;
bi->bi_io_vec[0].bv_offset = sh->dev[i].offset;
bi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf);
bi->bi_write_hint = sh->dev[i].write_hint;
if (!rrdev)
@ -1184,7 +1261,7 @@ again:
sh->dev[i].rvec.bv_page = sh->dev[i].page;
rbi->bi_vcnt = 1;
rbi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf);
rbi->bi_io_vec[0].bv_offset = 0;
rbi->bi_io_vec[0].bv_offset = sh->dev[i].offset;
rbi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf);
rbi->bi_write_hint = sh->dev[i].write_hint;
sh->dev[i].write_hint = RWH_WRITE_LIFE_NOT_SET;
@ -1226,7 +1303,7 @@ again:
static struct dma_async_tx_descriptor *
async_copy_data(int frombio, struct bio *bio, struct page **page,
sector_t sector, struct dma_async_tx_descriptor *tx,
unsigned int poff, sector_t sector, struct dma_async_tx_descriptor *tx,
struct stripe_head *sh, int no_skipcopy)
{
struct bio_vec bvl;
@ -1272,11 +1349,11 @@ async_copy_data(int frombio, struct bio *bio, struct page **page,
!no_skipcopy)
*page = bio_page;
else
tx = async_memcpy(*page, bio_page, page_offset,
tx = async_memcpy(*page, bio_page, page_offset + poff,
b_offset, clen, &submit);
} else
tx = async_memcpy(bio_page, *page, b_offset,
page_offset, clen, &submit);
page_offset + poff, clen, &submit);
}
/* chain the operations */
submit.depend_tx = tx;
@ -1349,6 +1426,7 @@ static void ops_run_biofill(struct stripe_head *sh)
while (rbi && rbi->bi_iter.bi_sector <
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
tx = async_copy_data(0, rbi, &dev->page,
dev->offset,
dev->sector, tx, sh, 0);
rbi = r5_next_bio(conf, rbi, dev->sector);
}
@ -1404,14 +1482,25 @@ static addr_conv_t *to_addr_conv(struct stripe_head *sh,
return (void *) (to_addr_page(percpu, i) + sh->disks + 2);
}
/*
* Return a pointer to record offset address.
*/
static unsigned int *
to_addr_offs(struct stripe_head *sh, struct raid5_percpu *percpu)
{
return (unsigned int *) (to_addr_conv(sh, percpu, 0) + sh->disks + 2);
}
static struct dma_async_tx_descriptor *
ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)
{
int disks = sh->disks;
struct page **xor_srcs = to_addr_page(percpu, 0);
unsigned int *off_srcs = to_addr_offs(sh, percpu);
int target = sh->ops.target;
struct r5dev *tgt = &sh->dev[target];
struct page *xor_dest = tgt->page;
unsigned int off_dest = tgt->offset;
int count = 0;
struct dma_async_tx_descriptor *tx;
struct async_submit_ctl submit;
@ -1423,19 +1512,22 @@ ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)
__func__, (unsigned long long)sh->sector, target);
BUG_ON(!test_bit(R5_Wantcompute, &tgt->flags));
for (i = disks; i--; )
if (i != target)
for (i = disks; i--; ) {
if (i != target) {
off_srcs[count] = sh->dev[i].offset;
xor_srcs[count++] = sh->dev[i].page;
}
}
atomic_inc(&sh->count);
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST, NULL,
ops_complete_compute, sh, to_addr_conv(sh, percpu, 0));
if (unlikely(count == 1))
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0,
tx = async_memcpy(xor_dest, xor_srcs[0], off_dest, off_srcs[0],
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
else
tx = async_xor(xor_dest, xor_srcs, 0, count,
tx = async_xor_offs(xor_dest, off_dest, xor_srcs, off_srcs, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
@ -1443,6 +1535,7 @@ ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)
/* set_syndrome_sources - populate source buffers for gen_syndrome
* @srcs - (struct page *) array of size sh->disks
* @offs - (unsigned int) array of offset for each page
* @sh - stripe_head to parse
*
* Populates srcs in proper layout order for the stripe and returns the
@ -1451,6 +1544,7 @@ ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)
* is recorded in srcs[count+1]].
*/
static int set_syndrome_sources(struct page **srcs,
unsigned int *offs,
struct stripe_head *sh,
int srctype)
{
@ -1481,6 +1575,12 @@ static int set_syndrome_sources(struct page **srcs,
srcs[slot] = sh->dev[i].orig_page;
else
srcs[slot] = sh->dev[i].page;
/*
* For R5_InJournal, PAGE_SIZE must be 4KB and will
* not shared page. In that case, dev[i].offset
* is 0.
*/
offs[slot] = sh->dev[i].offset;
}
i = raid6_next_disk(i, disks);
} while (i != d0_idx);
@ -1493,12 +1593,14 @@ ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)
{
int disks = sh->disks;
struct page **blocks = to_addr_page(percpu, 0);
unsigned int *offs = to_addr_offs(sh, percpu);
int target;
int qd_idx = sh->qd_idx;
struct dma_async_tx_descriptor *tx;
struct async_submit_ctl submit;
struct r5dev *tgt;
struct page *dest;
unsigned int dest_off;
int i;
int count;
@ -1517,17 +1619,18 @@ ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)
tgt = &sh->dev[target];
BUG_ON(!test_bit(R5_Wantcompute, &tgt->flags));
dest = tgt->page;
dest_off = tgt->offset;
atomic_inc(&sh->count);
if (target == qd_idx) {
count = set_syndrome_sources(blocks, sh, SYNDROME_SRC_ALL);
count = set_syndrome_sources(blocks, offs, sh, SYNDROME_SRC_ALL);
blocks[count] = NULL; /* regenerating p is not necessary */
BUG_ON(blocks[count+1] != dest); /* q should already be set */
init_async_submit(&submit, ASYNC_TX_FENCE, NULL,
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
tx = async_gen_syndrome(blocks, 0, count+2,
tx = async_gen_syndrome(blocks, offs, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
} else {
/* Compute any data- or p-drive using XOR */
@ -1535,13 +1638,14 @@ ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)
for (i = disks; i-- ; ) {
if (i == target || i == qd_idx)
continue;
offs[count] = sh->dev[i].offset;
blocks[count++] = sh->dev[i].page;
}
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST,
NULL, ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
tx = async_xor(dest, blocks, 0, count,
tx = async_xor_offs(dest, dest_off, blocks, offs, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
}
@ -1561,6 +1665,7 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
struct r5dev *tgt2 = &sh->dev[target2];
struct dma_async_tx_descriptor *tx;
struct page **blocks = to_addr_page(percpu, 0);
unsigned int *offs = to_addr_offs(sh, percpu);
struct async_submit_ctl submit;
BUG_ON(sh->batch_head);
@ -1573,13 +1678,16 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
/* we need to open-code set_syndrome_sources to handle the
* slot number conversion for 'faila' and 'failb'
*/
for (i = 0; i < disks ; i++)
for (i = 0; i < disks ; i++) {
offs[i] = 0;
blocks[i] = NULL;
}
count = 0;
i = d0_idx;
do {
int slot = raid6_idx_to_slot(i, sh, &count, syndrome_disks);
offs[slot] = sh->dev[i].offset;
blocks[slot] = sh->dev[i].page;
if (i == target)
@ -1604,11 +1712,12 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
init_async_submit(&submit, ASYNC_TX_FENCE, NULL,
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
return async_gen_syndrome(blocks, 0, syndrome_disks+2,
return async_gen_syndrome(blocks, offs, syndrome_disks+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
} else {
struct page *dest;
unsigned int dest_off;
int data_target;
int qd_idx = sh->qd_idx;
@ -1622,22 +1731,24 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
for (i = disks; i-- ; ) {
if (i == data_target || i == qd_idx)
continue;
offs[count] = sh->dev[i].offset;
blocks[count++] = sh->dev[i].page;
}
dest = sh->dev[data_target].page;
dest_off = sh->dev[data_target].offset;
init_async_submit(&submit,
ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST,
NULL, NULL, NULL,
to_addr_conv(sh, percpu, 0));
tx = async_xor(dest, blocks, 0, count,
tx = async_xor_offs(dest, dest_off, blocks, offs, count,
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
count = set_syndrome_sources(blocks, sh, SYNDROME_SRC_ALL);
count = set_syndrome_sources(blocks, offs, sh, SYNDROME_SRC_ALL);
init_async_submit(&submit, ASYNC_TX_FENCE, tx,
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
return async_gen_syndrome(blocks, 0, count+2,
return async_gen_syndrome(blocks, offs, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
}
@ -1650,13 +1761,13 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
return async_raid6_datap_recov(syndrome_disks+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
faila,
blocks, &submit);
blocks, offs, &submit);
} else {
/* We're missing D+D. */
return async_raid6_2data_recov(syndrome_disks+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
faila, failb,
blocks, &submit);
blocks, offs, &submit);
}
}
}
@ -1682,10 +1793,12 @@ ops_run_prexor5(struct stripe_head *sh, struct raid5_percpu *percpu,
{
int disks = sh->disks;
struct page **xor_srcs = to_addr_page(percpu, 0);
unsigned int *off_srcs = to_addr_offs(sh, percpu);
int count = 0, pd_idx = sh->pd_idx, i;
struct async_submit_ctl submit;
/* existing parity data subtracted */
unsigned int off_dest = off_srcs[count] = sh->dev[pd_idx].offset;
struct page *xor_dest = xor_srcs[count++] = sh->dev[pd_idx].page;
BUG_ON(sh->batch_head);
@ -1695,15 +1808,22 @@ ops_run_prexor5(struct stripe_head *sh, struct raid5_percpu *percpu,
for (i = disks; i--; ) {
struct r5dev *dev = &sh->dev[i];
/* Only process blocks that are known to be uptodate */
if (test_bit(R5_InJournal, &dev->flags))
if (test_bit(R5_InJournal, &dev->flags)) {
/*
* For this case, PAGE_SIZE must be equal to 4KB and
* page offset is zero.
*/
off_srcs[count] = dev->offset;
xor_srcs[count++] = dev->orig_page;
else if (test_bit(R5_Wantdrain, &dev->flags))
} else if (test_bit(R5_Wantdrain, &dev->flags)) {
off_srcs[count] = dev->offset;
xor_srcs[count++] = dev->page;
}
}
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));
tx = async_xor(xor_dest, xor_srcs, 0, count,
tx = async_xor_offs(xor_dest, off_dest, xor_srcs, off_srcs, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
@ -1714,17 +1834,18 @@ ops_run_prexor6(struct stripe_head *sh, struct raid5_percpu *percpu,
struct dma_async_tx_descriptor *tx)
{
struct page **blocks = to_addr_page(percpu, 0);
unsigned int *offs = to_addr_offs(sh, percpu);
int count;
struct async_submit_ctl submit;
pr_debug("%s: stripe %llu\n", __func__,
(unsigned long long)sh->sector);
count = set_syndrome_sources(blocks, sh, SYNDROME_SRC_WANT_DRAIN);
count = set_syndrome_sources(blocks, offs, sh, SYNDROME_SRC_WANT_DRAIN);
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_PQ_XOR_DST, tx,
ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));
tx = async_gen_syndrome(blocks, 0, count+2,
tx = async_gen_syndrome(blocks, offs, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
@ -1775,6 +1896,7 @@ again:
set_bit(R5_Discard, &dev->flags);
else {
tx = async_copy_data(1, wbi, &dev->page,
dev->offset,
dev->sector, tx, sh,
r5c_is_writeback(conf->log));
if (dev->page != dev->orig_page &&
@ -1854,9 +1976,11 @@ ops_run_reconstruct5(struct stripe_head *sh, struct raid5_percpu *percpu,
{
int disks = sh->disks;
struct page **xor_srcs;
unsigned int *off_srcs;
struct async_submit_ctl submit;
int count, pd_idx = sh->pd_idx, i;
struct page *xor_dest;
unsigned int off_dest;
int prexor = 0;
unsigned long flags;
int j = 0;
@ -1881,24 +2005,31 @@ ops_run_reconstruct5(struct stripe_head *sh, struct raid5_percpu *percpu,
again:
count = 0;
xor_srcs = to_addr_page(percpu, j);
off_srcs = to_addr_offs(sh, percpu);
/* check if prexor is active which means only process blocks
* that are part of a read-modify-write (written)
*/
if (head_sh->reconstruct_state == reconstruct_state_prexor_drain_run) {
prexor = 1;
off_dest = off_srcs[count] = sh->dev[pd_idx].offset;
xor_dest = xor_srcs[count++] = sh->dev[pd_idx].page;
for (i = disks; i--; ) {
struct r5dev *dev = &sh->dev[i];
if (head_sh->dev[i].written ||
test_bit(R5_InJournal, &head_sh->dev[i].flags))
test_bit(R5_InJournal, &head_sh->dev[i].flags)) {
off_srcs[count] = dev->offset;
xor_srcs[count++] = dev->page;
}
}
} else {
xor_dest = sh->dev[pd_idx].page;
off_dest = sh->dev[pd_idx].offset;
for (i = disks; i--; ) {
struct r5dev *dev = &sh->dev[i];
if (i != pd_idx)
if (i != pd_idx) {
off_srcs[count] = dev->offset;
xor_srcs[count++] = dev->page;
}
}
}
@ -1924,10 +2055,10 @@ again:
}
if (unlikely(count == 1))
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0,
tx = async_memcpy(xor_dest, xor_srcs[0], off_dest, off_srcs[0],
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
else
tx = async_xor(xor_dest, xor_srcs, 0, count,
tx = async_xor_offs(xor_dest, off_dest, xor_srcs, off_srcs, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
if (!last_stripe) {
j++;
@ -1943,6 +2074,7 @@ ops_run_reconstruct6(struct stripe_head *sh, struct raid5_percpu *percpu,
{
struct async_submit_ctl submit;
struct page **blocks;
unsigned int *offs;
int count, i, j = 0;
struct stripe_head *head_sh = sh;
int last_stripe;
@ -1967,6 +2099,7 @@ ops_run_reconstruct6(struct stripe_head *sh, struct raid5_percpu *percpu,
again:
blocks = to_addr_page(percpu, j);
offs = to_addr_offs(sh, percpu);
if (sh->reconstruct_state == reconstruct_state_prexor_drain_run) {
synflags = SYNDROME_SRC_WRITTEN;
@ -1976,7 +2109,7 @@ again:
txflags = ASYNC_TX_ACK;
}
count = set_syndrome_sources(blocks, sh, synflags);
count = set_syndrome_sources(blocks, offs, sh, synflags);
last_stripe = !head_sh->batch_head ||
list_first_entry(&sh->batch_list,
struct stripe_head, batch_list) == head_sh;
@ -1988,7 +2121,7 @@ again:
} else
init_async_submit(&submit, 0, tx, NULL, NULL,
to_addr_conv(sh, percpu, j));
tx = async_gen_syndrome(blocks, 0, count+2,
tx = async_gen_syndrome(blocks, offs, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
if (!last_stripe) {
j++;
@ -2016,7 +2149,9 @@ static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)
int pd_idx = sh->pd_idx;
int qd_idx = sh->qd_idx;
struct page *xor_dest;
unsigned int off_dest;
struct page **xor_srcs = to_addr_page(percpu, 0);
unsigned int *off_srcs = to_addr_offs(sh, percpu);
struct dma_async_tx_descriptor *tx;
struct async_submit_ctl submit;
int count;
@ -2028,16 +2163,19 @@ static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)
BUG_ON(sh->batch_head);
count = 0;
xor_dest = sh->dev[pd_idx].page;
off_dest = sh->dev[pd_idx].offset;
off_srcs[count] = off_dest;
xor_srcs[count++] = xor_dest;
for (i = disks; i--; ) {
if (i == pd_idx || i == qd_idx)
continue;
off_srcs[count] = sh->dev[i].offset;
xor_srcs[count++] = sh->dev[i].page;
}
init_async_submit(&submit, 0, NULL, NULL, NULL,
to_addr_conv(sh, percpu, 0));
tx = async_xor_val(xor_dest, xor_srcs, 0, count,
tx = async_xor_val_offs(xor_dest, off_dest, xor_srcs, off_srcs, count,
RAID5_STRIPE_SIZE(sh->raid_conf),
&sh->ops.zero_sum_result, &submit);
@ -2049,6 +2187,7 @@ static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)
static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu, int checkp)
{
struct page **srcs = to_addr_page(percpu, 0);
unsigned int *offs = to_addr_offs(sh, percpu);
struct async_submit_ctl submit;
int count;
@ -2056,16 +2195,16 @@ static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu
(unsigned long long)sh->sector, checkp);
BUG_ON(sh->batch_head);
count = set_syndrome_sources(srcs, sh, SYNDROME_SRC_ALL);
count = set_syndrome_sources(srcs, offs, sh, SYNDROME_SRC_ALL);
if (!checkp)
srcs[count] = NULL;
atomic_inc(&sh->count);
init_async_submit(&submit, ASYNC_TX_ACK, NULL, ops_complete_check,
sh, to_addr_conv(sh, percpu, 0));
async_syndrome_val(srcs, 0, count+2,
async_syndrome_val(srcs, offs, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
&sh->ops.zero_sum_result, percpu->spare_page, &submit);
&sh->ops.zero_sum_result, percpu->spare_page, 0, &submit);
}
static void raid_run_ops(struct stripe_head *sh, unsigned long ops_request)
@ -2142,6 +2281,9 @@ static void raid_run_ops(struct stripe_head *sh, unsigned long ops_request)
static void free_stripe(struct kmem_cache *sc, struct stripe_head *sh)
{
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
kfree(sh->pages);
#endif
if (sh->ppl_page)
__free_page(sh->ppl_page);
kmem_cache_free(sc, sh);
@ -2175,9 +2317,15 @@ static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp,
sh->ppl_page = alloc_page(gfp);
if (!sh->ppl_page) {
free_stripe(sc, sh);
sh = NULL;
return NULL;
}
}
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
if (init_stripe_shared_pages(sh, conf, disks)) {
free_stripe(sc, sh);
return NULL;
}
#endif
}
return sh;
}
@ -2253,8 +2401,9 @@ static int scribble_alloc(struct raid5_percpu *percpu,
int num, int cnt)
{
size_t obj_size =
sizeof(struct page *) * (num+2) +
sizeof(addr_conv_t) * (num+2);
sizeof(struct page *) * (num + 2) +
sizeof(addr_conv_t) * (num + 2) +
sizeof(unsigned int) * (num + 2);
void *scribble;
/*
@ -2386,9 +2535,16 @@ static int resize_stripes(struct r5conf *conf, int newsize)
osh = get_free_stripe(conf, hash);
unlock_device_hash_lock(conf, hash);
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
for (i = 0; i < osh->nr_pages; i++) {
nsh->pages[i] = osh->pages[i];
osh->pages[i] = NULL;
}
#endif
for(i=0; i<conf->pool_size; i++) {
nsh->dev[i].page = osh->dev[i].page;
nsh->dev[i].orig_page = osh->dev[i].page;
nsh->dev[i].offset = osh->dev[i].offset;
}
nsh->hash_lock_index = hash;
free_stripe(conf->slab_cache, osh);
@ -2429,8 +2585,6 @@ static int resize_stripes(struct r5conf *conf, int newsize)
} else
err = -ENOMEM;
mutex_unlock(&conf->cache_size_mutex);
conf->slab_cache = sc;
conf->active_name = 1-conf->active_name;
@ -2439,20 +2593,41 @@ static int resize_stripes(struct r5conf *conf, int newsize)
nsh = list_entry(newstripes.next, struct stripe_head, lru);
list_del_init(&nsh->lru);
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
for (i = 0; i < nsh->nr_pages; i++) {
if (nsh->pages[i])
continue;
nsh->pages[i] = alloc_page(GFP_NOIO);
if (!nsh->pages[i])
err = -ENOMEM;
}
for (i = conf->raid_disks; i < newsize; i++) {
if (nsh->dev[i].page)
continue;
nsh->dev[i].page = raid5_get_dev_page(nsh, i);
nsh->dev[i].orig_page = nsh->dev[i].page;
nsh->dev[i].offset = raid5_get_page_offset(nsh, i);
}
#else
for (i=conf->raid_disks; i < newsize; i++)
if (nsh->dev[i].page == NULL) {
struct page *p = alloc_page(GFP_NOIO);
nsh->dev[i].page = p;
nsh->dev[i].orig_page = p;
nsh->dev[i].offset = 0;
if (!p)
err = -ENOMEM;
}
#endif
raid5_release_stripe(nsh);
}
/* critical section pass, GFP_NOIO no longer needed */
if (!err)
conf->pool_size = newsize;
mutex_unlock(&conf->cache_size_mutex);
return err;
}
@ -4369,7 +4544,8 @@ static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh)
/* place all the copies on one channel */
init_async_submit(&submit, 0, tx, NULL, NULL, NULL);
tx = async_memcpy(sh2->dev[dd_idx].page,
sh->dev[i].page, 0, 0, RAID5_STRIPE_SIZE(conf),
sh->dev[i].page, sh2->dev[dd_idx].offset,
sh->dev[i].offset, RAID5_STRIPE_SIZE(conf),
&submit);
set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);
@ -6506,6 +6682,7 @@ raid5_store_stripe_size(struct mddev *mddev, const char *page, size_t len)
struct r5conf *conf;
unsigned long new;
int err;
int size;
if (len >= PAGE_SIZE)
return -EINVAL;
@ -6538,10 +6715,29 @@ raid5_store_stripe_size(struct mddev *mddev, const char *page, size_t len)
pr_debug("md/raid: change stripe_size from %lu to %lu\n",
conf->stripe_size, new);
if (mddev->sync_thread ||
test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
mddev->reshape_position != MaxSector ||
mddev->sysfs_active) {
err = -EBUSY;
goto out_unlock;
}
mddev_suspend(mddev);
mutex_lock(&conf->cache_size_mutex);
size = conf->max_nr_stripes;
shrink_stripes(conf);
conf->stripe_size = new;
conf->stripe_shift = ilog2(new) - 9;
conf->stripe_sectors = new >> 9;
if (grow_stripes(conf, size)) {
pr_warn("md/raid:%s: couldn't allocate buffers\n",
mdname(mddev));
err = -ENOMEM;
}
mutex_unlock(&conf->cache_size_mutex);
mddev_resume(mddev);
out_unlock:

29
drivers/md/raid5.h
View File

@ -195,6 +195,7 @@ enum reconstruct_states {
reconstruct_state_result,
};
#define DEFAULT_STRIPE_SIZE 4096
struct stripe_head {
struct hlist_node hash;
struct list_head lru; /* inactive_list or handle_list */
@ -246,6 +247,13 @@ struct stripe_head {
int target, target2;
enum sum_check_flags zero_sum_result;
} ops;
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
/* These pages will be used by bios in dev[i] */
struct page **pages;
int nr_pages; /* page array size */
int stripes_per_page;
#endif
struct r5dev {
/* rreq and rvec are used for the replacement device when
* writing data to both devices.
@ -253,6 +261,7 @@ struct stripe_head {
struct bio req, rreq;
struct bio_vec vec, rvec;
struct page *page, *orig_page;
unsigned int offset; /* offset of the page */
struct bio *toread, *read, *towrite, *written;
sector_t sector; /* sector of this page */
unsigned long flags;
@ -472,7 +481,6 @@ struct disk_info {
*/
#define NR_STRIPES 256
#define DEFAULT_STRIPE_SIZE 4096
#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
#define STRIPE_SIZE PAGE_SIZE
@ -771,6 +779,25 @@ static inline int algorithm_is_DDF(int layout)
return layout >= 8 && layout <= 10;
}
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
/*
* Return offset of the corresponding page for r5dev.
*/
static inline int raid5_get_page_offset(struct stripe_head *sh, int disk_idx)
{
return (disk_idx % sh->stripes_per_page) * RAID5_STRIPE_SIZE(sh->raid_conf);
}
/*
* Return corresponding page address for r5dev.
*/
static inline struct page *
raid5_get_dev_page(struct stripe_head *sh, int disk_idx)
{
return sh->pages[disk_idx / sh->stripes_per_page];
}
#endif
extern void md_raid5_kick_device(struct r5conf *conf);
extern int raid5_set_cache_size(struct mddev *mddev, int size);
extern sector_t raid5_compute_blocknr(struct stripe_head *sh, int i, int previous);

515
drivers/nvme/host/core.c
View File

@ -89,7 +89,6 @@ static dev_t nvme_chr_devt;
static struct class *nvme_class;
static struct class *nvme_subsys_class;
static int _nvme_revalidate_disk(struct gendisk *disk);
static void nvme_put_subsystem(struct nvme_subsystem *subsys);
static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,
unsigned nsid);
@ -968,10 +967,10 @@ static u32 nvme_known_admin_effects(u8 opcode)
{
switch (opcode) {
case nvme_admin_format_nvm:
return NVME_CMD_EFFECTS_CSUPP | NVME_CMD_EFFECTS_LBCC |
return NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_NCC |
NVME_CMD_EFFECTS_CSE_MASK;
case nvme_admin_sanitize_nvm:
return NVME_CMD_EFFECTS_CSE_MASK;
return NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK;
default:
break;
}
@ -1009,7 +1008,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
* For simplicity, IO to all namespaces is quiesced even if the command
* effects say only one namespace is affected.
*/
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
if (effects & NVME_CMD_EFFECTS_CSE_MASK) {
mutex_lock(&ctrl->scan_lock);
mutex_lock(&ctrl->subsys->lock);
nvme_mpath_start_freeze(ctrl->subsys);
@ -1020,36 +1019,9 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
return effects;
}
static void nvme_update_formats(struct nvme_ctrl *ctrl, u32 *effects)
{
struct nvme_ns *ns;
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
if (_nvme_revalidate_disk(ns->disk))
nvme_set_queue_dying(ns);
else if (blk_queue_is_zoned(ns->disk->queue)) {
/*
* IO commands are required to fully revalidate a zoned
* device. Force the command effects to trigger rescan
* work so report zones can run in a context with
* unfrozen IO queues.
*/
*effects |= NVME_CMD_EFFECTS_NCC;
}
up_read(&ctrl->namespaces_rwsem);
}
static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
{
/*
* Revalidate LBA changes prior to unfreezing. This is necessary to
* prevent memory corruption if a logical block size was changed by
* this command.
*/
if (effects & NVME_CMD_EFFECTS_LBCC)
nvme_update_formats(ctrl, &effects);
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
if (effects & NVME_CMD_EFFECTS_CSE_MASK) {
nvme_unfreeze(ctrl);
nvme_mpath_unfreeze(ctrl->subsys);
mutex_unlock(&ctrl->subsys->lock);
@ -1309,6 +1281,8 @@ static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl, unsigned nsid,
int status, pos, len;
void *data;
if (ctrl->vs < NVME_VS(1, 3, 0) && !nvme_multi_css(ctrl))
return 0;
if (ctrl->quirks & NVME_QUIRK_NO_NS_DESC_LIST)
return 0;
@ -1352,19 +1326,8 @@ free_data:
return status;
}
static int nvme_identify_ns_list(struct nvme_ctrl *dev, unsigned nsid, __le32 *ns_list)
{
struct nvme_command c = { };
c.identify.opcode = nvme_admin_identify;
c.identify.cns = NVME_ID_CNS_NS_ACTIVE_LIST;
c.identify.nsid = cpu_to_le32(nsid);
return nvme_submit_sync_cmd(dev->admin_q, &c, ns_list,
NVME_IDENTIFY_DATA_SIZE);
}
static int nvme_identify_ns(struct nvme_ctrl *ctrl,
unsigned nsid, struct nvme_id_ns **id)
static int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid,
struct nvme_ns_ids *ids, struct nvme_id_ns **id)
{
struct nvme_command c = { };
int error;
@ -1381,9 +1344,24 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl,
error = nvme_submit_sync_cmd(ctrl->admin_q, &c, *id, sizeof(**id));
if (error) {
dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error);
kfree(*id);
goto out_free_id;
}
error = -ENODEV;
if ((*id)->ncap == 0) /* namespace not allocated or attached */
goto out_free_id;
if (ctrl->vs >= NVME_VS(1, 1, 0) &&
!memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
memcpy(ids->eui64, (*id)->eui64, sizeof(ids->eui64));
if (ctrl->vs >= NVME_VS(1, 2, 0) &&
!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
memcpy(ids->nguid, (*id)->nguid, sizeof(ids->nguid));
return 0;
out_free_id:
kfree(*id);
return error;
}
@ -1905,20 +1883,6 @@ static void nvme_config_write_zeroes(struct gendisk *disk, struct nvme_ns *ns)
nvme_lba_to_sect(ns, max_blocks));
}
static int nvme_report_ns_ids(struct nvme_ctrl *ctrl, unsigned int nsid,
struct nvme_id_ns *id, struct nvme_ns_ids *ids)
{
memset(ids, 0, sizeof(*ids));
if (ctrl->vs >= NVME_VS(1, 1, 0))
memcpy(ids->eui64, id->eui64, sizeof(id->eui64));
if (ctrl->vs >= NVME_VS(1, 2, 0))
memcpy(ids->nguid, id->nguid, sizeof(id->nguid));
if (ctrl->vs >= NVME_VS(1, 3, 0) || nvme_multi_css(ctrl))
return nvme_identify_ns_descs(ctrl, nsid, ids);
return 0;
}
static bool nvme_ns_ids_valid(struct nvme_ns_ids *ids)
{
return !uuid_is_null(&ids->uuid) ||
@ -1959,6 +1923,68 @@ static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
return 0;
}
static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
{
struct nvme_ctrl *ctrl = ns->ctrl;
/*
* The PI implementation requires the metadata size to be equal to the
* t10 pi tuple size.
*/
ns->ms = le16_to_cpu(id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ms);
if (ns->ms == sizeof(struct t10_pi_tuple))
ns->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
else
ns->pi_type = 0;
ns->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);
if (!ns->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
return 0;
if (ctrl->ops->flags & NVME_F_FABRICS) {
/*
* The NVMe over Fabrics specification only supports metadata as
* part of the extended data LBA. We rely on HCA/HBA support to
* remap the separate metadata buffer from the block layer.
*/
if (WARN_ON_ONCE(!(id->flbas & NVME_NS_FLBAS_META_EXT)))
return -EINVAL;
if (ctrl->max_integrity_segments)
ns->features |=
(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);
} else {
/*
* For PCIe controllers, we can't easily remap the separate
* metadata buffer from the block layer and thus require a
* separate metadata buffer for block layer metadata/PI support.
* We allow extended LBAs for the passthrough interface, though.
*/
if (id->flbas & NVME_NS_FLBAS_META_EXT)
ns->features |= NVME_NS_EXT_LBAS;
else
ns->features |= NVME_NS_METADATA_SUPPORTED;
}
return 0;
}
static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
struct request_queue *q)
{
bool vwc = ctrl->vwc & NVME_CTRL_VWC_PRESENT;
if (ctrl->max_hw_sectors) {
u32 max_segments =
(ctrl->max_hw_sectors / (NVME_CTRL_PAGE_SIZE >> 9)) + 1;
max_segments = min_not_zero(max_segments, ctrl->max_segments);
blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);
blk_queue_max_segments(q, min_t(u32, max_segments, USHRT_MAX));
}
blk_queue_virt_boundary(q, NVME_CTRL_PAGE_SIZE - 1);
blk_queue_dma_alignment(q, 7);
blk_queue_write_cache(q, vwc, vwc);
}
static void nvme_update_disk_info(struct gendisk *disk,
struct nvme_ns *ns, struct nvme_id_ns *id)
{
@ -1966,11 +1992,15 @@ static void nvme_update_disk_info(struct gendisk *disk,
unsigned short bs = 1 << ns->lba_shift;
u32 atomic_bs, phys_bs, io_opt = 0;
/*
* The block layer can't support LBA sizes larger than the page size
* yet, so catch this early and don't allow block I/O.
*/
if (ns->lba_shift > PAGE_SHIFT) {
/* unsupported block size, set capacity to 0 later */
capacity = 0;
bs = (1 << 9);
}
blk_mq_freeze_queue(disk->queue);
blk_integrity_unregister(disk);
atomic_bs = phys_bs = bs;
@ -2004,13 +2034,6 @@ static void nvme_update_disk_info(struct gendisk *disk,
blk_queue_io_min(disk->queue, phys_bs);
blk_queue_io_opt(disk->queue, io_opt);
/*
* The block layer can't support LBA sizes larger than the page size
* yet, so catch this early and don't allow block I/O.
*/
if (ns->lba_shift > PAGE_SHIFT)
capacity = 0;
/*
* Register a metadata profile for PI, or the plain non-integrity NVMe
* metadata masquerading as Type 0 if supported, otherwise reject block
@ -2035,8 +2058,6 @@ static void nvme_update_disk_info(struct gendisk *disk,
set_disk_ro(disk, true);
else
set_disk_ro(disk, false);
blk_mq_unfreeze_queue(disk->queue);
}
static inline bool nvme_first_scan(struct gendisk *disk)
@ -2076,151 +2097,49 @@ static void nvme_set_chunk_sectors(struct nvme_ns *ns, struct nvme_id_ns *id)
blk_queue_chunk_sectors(ns->queue, iob);
}
static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_id_ns *id)
{
unsigned lbaf = id->flbas & NVME_NS_FLBAS_LBA_MASK;
struct nvme_ns *ns = disk->private_data;
struct nvme_ctrl *ctrl = ns->ctrl;
int ret;
/*
* If identify namespace failed, use default 512 byte block size so
* block layer can use before failing read/write for 0 capacity.
*/
blk_mq_freeze_queue(ns->disk->queue);
ns->lba_shift = id->lbaf[lbaf].ds;
if (ns->lba_shift == 0)
ns->lba_shift = 9;
nvme_set_queue_limits(ns->ctrl, ns->queue);
switch (ns->head->ids.csi) {
case NVME_CSI_NVM:
break;
case NVME_CSI_ZNS:
ret = nvme_update_zone_info(disk, ns, lbaf);
if (ret) {
dev_warn(ctrl->device,
"failed to add zoned namespace:%u ret:%d\n",
ns->head->ns_id, ret);
return ret;
}
break;
default:
dev_warn(ctrl->device, "unknown csi:%u ns:%u\n",
ns->head->ids.csi, ns->head->ns_id);
return -ENODEV;
}
ns->features = 0;
ns->ms = le16_to_cpu(id->lbaf[lbaf].ms);
/* the PI implementation requires metadata equal t10 pi tuple size */
if (ns->ms == sizeof(struct t10_pi_tuple))
ns->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
else
ns->pi_type = 0;
if (ns->ms) {
/*
* For PCIe only the separate metadata pointer is supported,
* as the block layer supplies metadata in a separate bio_vec
* chain. For Fabrics, only metadata as part of extended data
* LBA is supported on the wire per the Fabrics specification,
* but the HBA/HCA will do the remapping from the separate
* metadata buffers for us.
*/
if (id->flbas & NVME_NS_FLBAS_META_EXT) {
ns->features |= NVME_NS_EXT_LBAS;
if ((ctrl->ops->flags & NVME_F_FABRICS) &&
(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED) &&
ctrl->max_integrity_segments)
ns->features |= NVME_NS_METADATA_SUPPORTED;
} else {
if (WARN_ON_ONCE(ctrl->ops->flags & NVME_F_FABRICS))
return -EINVAL;
if (ctrl->ops->flags & NVME_F_METADATA_SUPPORTED)
ns->features |= NVME_NS_METADATA_SUPPORTED;
}
if (ns->head->ids.csi == NVME_CSI_ZNS) {
ret = nvme_update_zone_info(ns, lbaf);
if (ret)
goto out_unfreeze;
}
ret = nvme_configure_metadata(ns, id);
if (ret)
goto out_unfreeze;
nvme_set_chunk_sectors(ns, id);
nvme_update_disk_info(disk, ns, id);
nvme_update_disk_info(ns->disk, ns, id);
blk_mq_unfreeze_queue(ns->disk->queue);
if (blk_queue_is_zoned(ns->queue)) {
ret = nvme_revalidate_zones(ns);
if (ret)
return ret;
}
#ifdef CONFIG_NVME_MULTIPATH
if (ns->head->disk) {
blk_mq_freeze_queue(ns->head->disk->queue);
nvme_update_disk_info(ns->head->disk, ns, id);
blk_stack_limits(&ns->head->disk->queue->limits,
&ns->queue->limits, 0);
blk_queue_update_readahead(ns->head->disk->queue);
nvme_update_bdev_size(ns->head->disk);
blk_mq_unfreeze_queue(ns->head->disk->queue);
}
#endif
return 0;
}
static int _nvme_revalidate_disk(struct gendisk *disk)
{
struct nvme_ns *ns = disk->private_data;
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_id_ns *id;
struct nvme_ns_ids ids;
int ret = 0;
if (test_bit(NVME_NS_DEAD, &ns->flags)) {
set_capacity(disk, 0);
return -ENODEV;
}
ret = nvme_identify_ns(ctrl, ns->head->ns_id, &id);
if (ret)
goto out;
if (id->ncap == 0) {
ret = -ENODEV;
goto free_id;
}
ret = nvme_report_ns_ids(ctrl, ns->head->ns_id, id, &ids);
if (ret)
goto free_id;
if (!nvme_ns_ids_equal(&ns->head->ids, &ids)) {
dev_err(ctrl->device,
"identifiers changed for nsid %d\n", ns->head->ns_id);
ret = -ENODEV;
goto free_id;
}
ret = __nvme_revalidate_disk(disk, id);
free_id:
kfree(id);
out:
/*
* Only fail the function if we got a fatal error back from the
* device, otherwise ignore the error and just move on.
*/
if (ret == -ENOMEM || (ret > 0 && !(ret & NVME_SC_DNR)))
ret = 0;
else if (ret > 0)
ret = blk_status_to_errno(nvme_error_status(ret));
return ret;
}
static int nvme_revalidate_disk(struct gendisk *disk)
{
int ret;
ret = _nvme_revalidate_disk(disk);
if (ret)
return ret;
#ifdef CONFIG_BLK_DEV_ZONED
if (blk_queue_is_zoned(disk->queue)) {
struct nvme_ns *ns = disk->private_data;
struct nvme_ctrl *ctrl = ns->ctrl;
ret = blk_revalidate_disk_zones(disk, NULL);
if (!ret)
blk_queue_max_zone_append_sectors(disk->queue,
ctrl->max_zone_append);
}
#endif
out_unfreeze:
blk_mq_unfreeze_queue(ns->disk->queue);
return ret;
}
@ -2502,26 +2421,6 @@ int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_shutdown_ctrl);
static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
struct request_queue *q)
{
bool vwc = false;
if (ctrl->max_hw_sectors) {
u32 max_segments =
(ctrl->max_hw_sectors / (NVME_CTRL_PAGE_SIZE >> 9)) + 1;
max_segments = min_not_zero(max_segments, ctrl->max_segments);
blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);
blk_queue_max_segments(q, min_t(u32, max_segments, USHRT_MAX));
}
blk_queue_virt_boundary(q, NVME_CTRL_PAGE_SIZE - 1);
blk_queue_dma_alignment(q, 7);
if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
vwc = true;
blk_queue_write_cache(q, vwc, vwc);
}
static int nvme_configure_timestamp(struct nvme_ctrl *ctrl)
{
__le64 ts;
@ -3025,26 +2924,10 @@ int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi,
return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);
}
static struct nvme_cel *nvme_find_cel(struct nvme_ctrl *ctrl, u8 csi)
{
struct nvme_cel *cel, *ret = NULL;
spin_lock_irq(&ctrl->lock);
list_for_each_entry(cel, &ctrl->cels, entry) {
if (cel->csi == csi) {
ret = cel;
break;
}
}
spin_unlock_irq(&ctrl->lock);
return ret;
}
static int nvme_get_effects_log(struct nvme_ctrl *ctrl, u8 csi,
struct nvme_effects_log **log)
{
struct nvme_cel *cel = nvme_find_cel(ctrl, csi);
struct nvme_cel *cel = xa_load(&ctrl->cels, csi);
int ret;
if (cel)
@ -3062,10 +2945,7 @@ static int nvme_get_effects_log(struct nvme_ctrl *ctrl, u8 csi,
}
cel->csi = csi;
spin_lock_irq(&ctrl->lock);
list_add_tail(&cel->entry, &ctrl->cels);
spin_unlock_irq(&ctrl->lock);
xa_store(&ctrl->cels, cel->csi, cel, GFP_KERNEL);
out:
*log = &cel->log;
return 0;
@ -3846,25 +3726,16 @@ out:
}
static int nvme_init_ns_head(struct nvme_ns *ns, unsigned nsid,
struct nvme_id_ns *id)
struct nvme_ns_ids *ids, bool is_shared)
{
struct nvme_ctrl *ctrl = ns->ctrl;
bool is_shared = id->nmic & NVME_NS_NMIC_SHARED;
struct nvme_ns_head *head = NULL;
struct nvme_ns_ids ids;
int ret = 0;
ret = nvme_report_ns_ids(ctrl, nsid, id, &ids);
if (ret) {
if (ret < 0)
return ret;
return blk_status_to_errno(nvme_error_status(ret));
}
mutex_lock(&ctrl->subsys->lock);
head = nvme_find_ns_head(ctrl->subsys, nsid);
if (!head) {
head = nvme_alloc_ns_head(ctrl, nsid, &ids);
head = nvme_alloc_ns_head(ctrl, nsid, ids);
if (IS_ERR(head)) {
ret = PTR_ERR(head);
goto out_unlock;
@ -3877,7 +3748,7 @@ static int nvme_init_ns_head(struct nvme_ns *ns, unsigned nsid,
"Duplicate unshared namespace %d\n", nsid);
goto out_put_ns_head;
}
if (!nvme_ns_ids_equal(&head->ids, &ids)) {
if (!nvme_ns_ids_equal(&head->ids, ids)) {
dev_err(ctrl->device,
"IDs don't match for shared namespace %d\n",
nsid);
@ -3925,7 +3796,8 @@ struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
}
EXPORT_SYMBOL_NS_GPL(nvme_find_get_ns, NVME_TARGET_PASSTHRU);
static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
struct nvme_ns_ids *ids)
{
struct nvme_ns *ns;
struct gendisk *disk;
@ -3933,9 +3805,12 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
char disk_name[DISK_NAME_LEN];
int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT, ret;
if (nvme_identify_ns(ctrl, nsid, ids, &id))
return;
ns = kzalloc_node(sizeof(*ns), GFP_KERNEL, node);
if (!ns)
return;
goto out_free_id;
ns->queue = blk_mq_init_queue(ctrl->tagset);
if (IS_ERR(ns->queue))
@ -3950,23 +3825,11 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->queue->queuedata = ns;
ns->ctrl = ctrl;
kref_init(&ns->kref);
ns->lba_shift = 9; /* set to a default value for 512 until disk is validated */
blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
nvme_set_queue_limits(ctrl, ns->queue);
ret = nvme_identify_ns(ctrl, nsid, &id);
ret = nvme_init_ns_head(ns, nsid, ids, id->nmic & NVME_NS_NMIC_SHARED);
if (ret)
goto out_free_queue;
if (id->ncap == 0) /* no namespace (legacy quirk) */
goto out_free_id;
ret = nvme_init_ns_head(ns, nsid, id);
if (ret)
goto out_free_id;
nvme_set_disk_name(disk_name, ns, ctrl, &flags);
disk = alloc_disk_node(0, node);
@ -3980,7 +3843,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
memcpy(disk->disk_name, disk_name, DISK_NAME_LEN);
ns->disk = disk;
if (__nvme_revalidate_disk(disk, id))
if (nvme_update_ns_info(ns, id))
goto out_put_disk;
if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
@ -4015,12 +3878,12 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
list_del_init(&ns->head->entry);
mutex_unlock(&ctrl->subsys->lock);
nvme_put_ns_head(ns->head);
out_free_id:
kfree(id);
out_free_queue:
blk_cleanup_queue(ns->queue);
out_free_ns:
kfree(ns);
out_free_id:
kfree(id);
}
static void nvme_ns_remove(struct nvme_ns *ns)
@ -4028,6 +3891,7 @@ static void nvme_ns_remove(struct nvme_ns *ns)
if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))
return;
set_capacity(ns->disk, 0);
nvme_fault_inject_fini(&ns->fault_inject);
mutex_lock(&ns->ctrl->subsys->lock);
@ -4065,22 +3929,75 @@ static void nvme_ns_remove_by_nsid(struct nvme_ctrl *ctrl, u32 nsid)
}
}
static void nvme_validate_ns(struct nvme_ctrl *ctrl, unsigned nsid)
static void nvme_validate_ns(struct nvme_ns *ns, struct nvme_ns_ids *ids)
{
struct nvme_id_ns *id;
int ret = -ENODEV;
if (test_bit(NVME_NS_DEAD, &ns->flags))
goto out;
ret = nvme_identify_ns(ns->ctrl, ns->head->ns_id, ids, &id);
if (ret)
goto out;
ret = -ENODEV;
if (!nvme_ns_ids_equal(&ns->head->ids, ids)) {
dev_err(ns->ctrl->device,
"identifiers changed for nsid %d\n", ns->head->ns_id);
goto out_free_id;
}
ret = nvme_update_ns_info(ns, id);
out_free_id:
kfree(id);
out:
/*
* Only remove the namespace if we got a fatal error back from the
* device, otherwise ignore the error and just move on.
*
* TODO: we should probably schedule a delayed retry here.
*/
if (ret && ret != -ENOMEM && !(ret > 0 && !(ret & NVME_SC_DNR)))
nvme_ns_remove(ns);
else
revalidate_disk_size(ns->disk, true);
}
static void nvme_validate_or_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
{
struct nvme_ns_ids ids = { };
struct nvme_ns *ns;
int ret;
if (nvme_identify_ns_descs(ctrl, nsid, &ids))
return;
ns = nvme_find_get_ns(ctrl, nsid);
if (!ns) {
nvme_alloc_ns(ctrl, nsid);
if (ns) {
nvme_validate_ns(ns, &ids);
nvme_put_ns(ns);
return;
}
ret = nvme_revalidate_disk(ns->disk);
revalidate_disk_size(ns->disk, ret == 0);
if (ret)
nvme_ns_remove(ns);
nvme_put_ns(ns);
switch (ids.csi) {
case NVME_CSI_NVM:
nvme_alloc_ns(ctrl, nsid, &ids);
break;
case NVME_CSI_ZNS:
if (!IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
dev_warn(ctrl->device,
"nsid %u not supported without CONFIG_BLK_DEV_ZONED\n",
nsid);
break;
}
nvme_alloc_ns(ctrl, nsid, &ids);
break;
default:
dev_warn(ctrl->device, "unknown csi %u for nsid %u\n",
ids.csi, nsid);
break;
}
}
static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,
@ -4116,7 +4033,14 @@ static int nvme_scan_ns_list(struct nvme_ctrl *ctrl)
return -ENOMEM;
for (;;) {
ret = nvme_identify_ns_list(ctrl, prev, ns_list);
struct nvme_command cmd = {
.identify.opcode = nvme_admin_identify,
.identify.cns = NVME_ID_CNS_NS_ACTIVE_LIST,
.identify.nsid = cpu_to_le32(prev),
};
ret = nvme_submit_sync_cmd(ctrl->admin_q, &cmd, ns_list,
NVME_IDENTIFY_DATA_SIZE);
if (ret)
goto free;
@ -4125,7 +4049,7 @@ static int nvme_scan_ns_list(struct nvme_ctrl *ctrl)
if (!nsid) /* end of the list? */
goto out;
nvme_validate_ns(ctrl, nsid);
nvme_validate_or_alloc_ns(ctrl, nsid);
while (++prev < nsid)
nvme_ns_remove_by_nsid(ctrl, prev);
}
@ -4148,7 +4072,7 @@ static void nvme_scan_ns_sequential(struct nvme_ctrl *ctrl)
kfree(id);
for (i = 1; i <= nn; i++)
nvme_validate_ns(ctrl, i);
nvme_validate_or_alloc_ns(ctrl, i);
nvme_remove_invalid_namespaces(ctrl, nn);
}
@ -4453,15 +4377,11 @@ static void nvme_free_ctrl(struct device *dev)
struct nvme_ctrl *ctrl =
container_of(dev, struct nvme_ctrl, ctrl_device);
struct nvme_subsystem *subsys = ctrl->subsys;
struct nvme_cel *cel, *next;
if (!subsys || ctrl->instance != subsys->instance)
ida_simple_remove(&nvme_instance_ida, ctrl->instance);
list_for_each_entry_safe(cel, next, &ctrl->cels, entry) {
list_del(&cel->entry);
kfree(cel);
}
xa_destroy(&ctrl->cels);
nvme_mpath_uninit(ctrl);
__free_page(ctrl->discard_page);
@ -4493,7 +4413,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
spin_lock_init(&ctrl->lock);
mutex_init(&ctrl->scan_lock);
INIT_LIST_HEAD(&ctrl->namespaces);
INIT_LIST_HEAD(&ctrl->cels);
xa_init(&ctrl->cels);
init_rwsem(&ctrl->namespaces_rwsem);
ctrl->dev = dev;
ctrl->ops = ops;
@ -4673,28 +4593,13 @@ void nvme_sync_queues(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_sync_queues);
struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path)
struct nvme_ctrl *nvme_ctrl_from_file(struct file *file)
{
struct nvme_ctrl *ctrl;
struct file *f;
f = filp_open(path, O_RDWR, 0);
if (IS_ERR(f))
return ERR_CAST(f);
if (f->f_op != &nvme_dev_fops) {
ctrl = ERR_PTR(-EINVAL);
goto out_close;
}
ctrl = f->private_data;
nvme_get_ctrl(ctrl);
out_close:
filp_close(f, NULL);
return ctrl;
if (file->f_op != &nvme_dev_fops)
return NULL;
return file->private_data;
}
EXPORT_SYMBOL_NS_GPL(nvme_ctrl_get_by_path, NVME_TARGET_PASSTHRU);
EXPORT_SYMBOL_NS_GPL(nvme_ctrl_from_file, NVME_TARGET_PASSTHRU);
/*
* Check we didn't inadvertently grow the command structure sizes:

13
drivers/nvme/host/nvme.h
View File

@ -300,7 +300,7 @@ struct nvme_ctrl {
unsigned long quirks;
struct nvme_id_power_state psd[32];
struct nvme_effects_log *effects;
struct list_head cels;
struct xarray cels;
struct work_struct scan_work;
struct work_struct async_event_work;
struct delayed_work ka_work;
@ -758,10 +758,9 @@ static inline void nvme_mpath_start_freeze(struct nvme_subsystem *subsys)
}
#endif /* CONFIG_NVME_MULTIPATH */
int nvme_revalidate_zones(struct nvme_ns *ns);
#ifdef CONFIG_BLK_DEV_ZONED
int nvme_update_zone_info(struct gendisk *disk, struct nvme_ns *ns,
unsigned lbaf);
int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf);
int nvme_report_zones(struct gendisk *disk, sector_t sector,
unsigned int nr_zones, report_zones_cb cb, void *data);
@ -778,9 +777,7 @@ static inline blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns,
return BLK_STS_NOTSUPP;
}
static inline int nvme_update_zone_info(struct gendisk *disk,
struct nvme_ns *ns,
unsigned lbaf)
static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
{
dev_warn(ns->ctrl->device,
"Please enable CONFIG_BLK_DEV_ZONED to support ZNS devices\n");
@ -825,7 +822,7 @@ static inline int nvme_hwmon_init(struct nvme_ctrl *ctrl)
u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 opcode);
void nvme_execute_passthru_rq(struct request *rq);
struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path);
struct nvme_ctrl *nvme_ctrl_from_file(struct file *file);
struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid);
void nvme_put_ns(struct nvme_ns *ns);

35
drivers/nvme/host/pci.c
View File

@ -2038,32 +2038,30 @@ static int nvme_setup_irqs(struct nvme_dev *dev, unsigned int nr_io_queues)
.calc_sets = nvme_calc_irq_sets,
.priv = dev,
};
unsigned int irq_queues, this_p_queues;
unsigned int irq_queues, poll_queues;
/*
* Poll queues don't need interrupts, but we need at least one IO
* queue left over for non-polled IO.
* Poll queues don't need interrupts, but we need at least one I/O queue
* left over for non-polled I/O.
*/
this_p_queues = dev->nr_poll_queues;
if (this_p_queues >= nr_io_queues) {
this_p_queues = nr_io_queues - 1;
irq_queues = 1;
} else {
irq_queues = nr_io_queues - this_p_queues + 1;
}
dev->io_queues[HCTX_TYPE_POLL] = this_p_queues;
poll_queues = min(dev->nr_poll_queues, nr_io_queues - 1);
dev->io_queues[HCTX_TYPE_POLL] = poll_queues;
/* Initialize for the single interrupt case */
/*
* Initialize for the single interrupt case, will be updated in
* nvme_calc_irq_sets().
*/
dev->io_queues[HCTX_TYPE_DEFAULT] = 1;
dev->io_queues[HCTX_TYPE_READ] = 0;
/*
* Some Apple controllers require all queues to use the
* first vector.
* We need interrupts for the admin queue and each non-polled I/O queue,
* but some Apple controllers require all queues to use the first
* vector.
*/
if (dev->ctrl.quirks & NVME_QUIRK_SINGLE_VECTOR)
irq_queues = 1;
irq_queues = 1;
if (!(dev->ctrl.quirks & NVME_QUIRK_SINGLE_VECTOR))
irq_queues += (nr_io_queues - poll_queues);
return pci_alloc_irq_vectors_affinity(pdev, 1, irq_queues,
PCI_IRQ_ALL_TYPES | PCI_IRQ_AFFINITY, &affd);
}
@ -3187,7 +3185,6 @@ static const struct pci_device_id nvme_id_table[] = {
NVME_QUIRK_IGNORE_DEV_SUBNQN, },
{ PCI_DEVICE(0x1c5c, 0x1504), /* SK Hynix PC400 */
.driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, },
{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001),
.driver_data = NVME_QUIRK_SINGLE_VECTOR },
{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) },
@ -3195,6 +3192,8 @@ static const struct pci_device_id nvme_id_table[] = {
.driver_data = NVME_QUIRK_SINGLE_VECTOR |
NVME_QUIRK_128_BYTES_SQES |
NVME_QUIRK_SHARED_TAGS },
{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, nvme_id_table);

59
drivers/nvme/host/zns.c
View File

@ -7,6 +7,17 @@
#include <linux/vmalloc.h>
#include "nvme.h"
int nvme_revalidate_zones(struct nvme_ns *ns)
{
struct request_queue *q = ns->queue;
int ret;
ret = blk_revalidate_disk_zones(ns->disk, NULL);
if (!ret)
blk_queue_max_zone_append_sectors(q, ns->ctrl->max_zone_append);
return ret;
}
static int nvme_set_max_append(struct nvme_ctrl *ctrl)
{
struct nvme_command c = { };
@ -35,11 +46,10 @@ static int nvme_set_max_append(struct nvme_ctrl *ctrl)
return 0;
}
int nvme_update_zone_info(struct gendisk *disk, struct nvme_ns *ns,
unsigned lbaf)
int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
{
struct nvme_effects_log *log = ns->head->effects;
struct request_queue *q = disk->queue;
struct request_queue *q = ns->queue;
struct nvme_command c = { };
struct nvme_id_ns_zns *id;
int status;
@ -133,28 +143,6 @@ static void *nvme_zns_alloc_report_buffer(struct nvme_ns *ns,
return NULL;
}
static int __nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
struct nvme_zone_report *report,
size_t buflen)
{
struct nvme_command c = { };
int ret;
c.zmr.opcode = nvme_cmd_zone_mgmt_recv;
c.zmr.nsid = cpu_to_le32(ns->head->ns_id);
c.zmr.slba = cpu_to_le64(nvme_sect_to_lba(ns, sector));
c.zmr.numd = cpu_to_le32(nvme_bytes_to_numd(buflen));
c.zmr.zra = NVME_ZRA_ZONE_REPORT;
c.zmr.zrasf = NVME_ZRASF_ZONE_REPORT_ALL;
c.zmr.pr = NVME_REPORT_ZONE_PARTIAL;
ret = nvme_submit_sync_cmd(ns->queue, &c, report, buflen);
if (ret)
return ret;
return le64_to_cpu(report->nr_zones);
}
static int nvme_zone_parse_entry(struct nvme_ns *ns,
struct nvme_zone_descriptor *entry,
unsigned int idx, report_zones_cb cb,
@ -182,6 +170,7 @@ static int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
unsigned int nr_zones, report_zones_cb cb, void *data)
{
struct nvme_zone_report *report;
struct nvme_command c = { };
int ret, zone_idx = 0;
unsigned int nz, i;
size_t buflen;
@ -190,14 +179,26 @@ static int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
if (!report)
return -ENOMEM;
c.zmr.opcode = nvme_cmd_zone_mgmt_recv;
c.zmr.nsid = cpu_to_le32(ns->head->ns_id);
c.zmr.numd = cpu_to_le32(nvme_bytes_to_numd(buflen));
c.zmr.zra = NVME_ZRA_ZONE_REPORT;
c.zmr.zrasf = NVME_ZRASF_ZONE_REPORT_ALL;
c.zmr.pr = NVME_REPORT_ZONE_PARTIAL;
sector &= ~(ns->zsze - 1);
while (zone_idx < nr_zones && sector < get_capacity(ns->disk)) {
memset(report, 0, buflen);
ret = __nvme_ns_report_zones(ns, sector, report, buflen);
if (ret < 0)
goto out_free;
nz = min_t(unsigned int, ret, nr_zones);
c.zmr.slba = cpu_to_le64(nvme_sect_to_lba(ns, sector));
ret = nvme_submit_sync_cmd(ns->queue, &c, report, buflen);
if (ret) {
if (ret > 0)
ret = -EIO;
goto out_free;
}
nz = min((unsigned int)le64_to_cpu(report->nr_zones), nr_zones);
if (!nz)
break;

2
drivers/nvme/target/admin-cmd.c
View File

@ -727,7 +727,9 @@ u16 nvmet_set_feat_kato(struct nvmet_req *req)
{
u32 val32 = le32_to_cpu(req->cmd->common.cdw11);
nvmet_stop_keep_alive_timer(req->sq->ctrl);
req->sq->ctrl->kato = DIV_ROUND_UP(val32, 1000);
nvmet_start_keep_alive_timer(req->sq->ctrl);
nvmet_set_result(req, req->sq->ctrl->kato);

4
drivers/nvme/target/core.c
View File

@ -395,7 +395,7 @@ static void nvmet_keep_alive_timer(struct work_struct *work)
nvmet_ctrl_fatal_error(ctrl);
}
static void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
{
if (unlikely(ctrl->kato == 0))
return;
@ -407,7 +407,7 @@ static void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
schedule_delayed_work(&ctrl->ka_work, ctrl->kato * HZ);
}
static void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl)
void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl)
{
if (unlikely(ctrl->kato == 0))
return;

2
drivers/nvme/target/fc.c
View File

@ -1019,7 +1019,7 @@ static void
nvmet_fc_free_hostport(struct nvmet_fc_hostport *hostport)
{
/* if LLDD not implemented, leave as NULL */
if (!hostport->hosthandle)
if (!hostport || !hostport->hosthandle)
return;
nvmet_fc_hostport_put(hostport);

4
drivers/nvme/target/loop.c
View File

@ -579,7 +579,7 @@ static struct nvme_ctrl *nvme_loop_create_ctrl(struct device *dev,
ret = nvme_init_ctrl(&ctrl->ctrl, dev, &nvme_loop_ctrl_ops,
0 /* no quirks, we're perfect! */);
if (ret)
goto out_put_ctrl;
goto out;
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING))
WARN_ON_ONCE(1);
@ -635,8 +635,8 @@ out_free_queues:
kfree(ctrl->queues);
out_uninit_ctrl:
nvme_uninit_ctrl(&ctrl->ctrl);
out_put_ctrl:
nvme_put_ctrl(&ctrl->ctrl);
out:
if (ret > 0)
ret = -EIO;
return ERR_PTR(ret);

2
drivers/nvme/target/nvmet.h
View File

@ -395,6 +395,8 @@ void nvmet_get_feat_async_event(struct nvmet_req *req);
u16 nvmet_set_feat_kato(struct nvmet_req *req);
u16 nvmet_set_feat_async_event(struct nvmet_req *req, u32 mask);
void nvmet_execute_async_event(struct nvmet_req *req);
void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl);
void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl);
u16 nvmet_parse_connect_cmd(struct nvmet_req *req);
void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id);

43
drivers/nvme/target/passthru.c
View File

@ -456,10 +456,26 @@ u16 nvmet_parse_passthru_admin_cmd(struct nvmet_req *req)
req->execute = nvmet_passthru_execute_cmd;
req->p.use_workqueue = true;
return NVME_SC_SUCCESS;
case NVME_ID_CNS_CS_CTRL:
switch (req->cmd->identify.csi) {
case NVME_CSI_ZNS:
req->execute = nvmet_passthru_execute_cmd;
req->p.use_workqueue = true;
return NVME_SC_SUCCESS;
}
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
case NVME_ID_CNS_NS:
req->execute = nvmet_passthru_execute_cmd;
req->p.use_workqueue = true;
return NVME_SC_SUCCESS;
case NVME_ID_CNS_CS_NS:
switch (req->cmd->identify.csi) {
case NVME_CSI_ZNS:
req->execute = nvmet_passthru_execute_cmd;
req->p.use_workqueue = true;
return NVME_SC_SUCCESS;
}
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
default:
return nvmet_setup_passthru_command(req);
}
@ -474,6 +490,7 @@ u16 nvmet_parse_passthru_admin_cmd(struct nvmet_req *req)
int nvmet_passthru_ctrl_enable(struct nvmet_subsys *subsys)
{
struct nvme_ctrl *ctrl;
struct file *file;
int ret = -EINVAL;
void *old;
@ -488,24 +505,29 @@ int nvmet_passthru_ctrl_enable(struct nvmet_subsys *subsys)
goto out_unlock;
}
ctrl = nvme_ctrl_get_by_path(subsys->passthru_ctrl_path);
if (IS_ERR(ctrl)) {
ret = PTR_ERR(ctrl);
file = filp_open(subsys->passthru_ctrl_path, O_RDWR, 0);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
goto out_unlock;
}
ctrl = nvme_ctrl_from_file(file);
if (!ctrl) {
pr_err("failed to open nvme controller %s\n",
subsys->passthru_ctrl_path);
goto out_unlock;
goto out_put_file;
}
old = xa_cmpxchg(&passthru_subsystems, ctrl->cntlid, NULL,
subsys, GFP_KERNEL);
if (xa_is_err(old)) {
ret = xa_err(old);
goto out_put_ctrl;
goto out_put_file;
}
if (old)
goto out_put_ctrl;
goto out_put_file;
subsys->passthru_ctrl = ctrl;
subsys->ver = ctrl->vs;
@ -516,13 +538,12 @@ int nvmet_passthru_ctrl_enable(struct nvmet_subsys *subsys)
NVME_TERTIARY(subsys->ver));
subsys->ver = NVME_VS(1, 2, 1);
}
nvme_get_ctrl(ctrl);
__module_get(subsys->passthru_ctrl->ops->module);
mutex_unlock(&subsys->lock);
return 0;
ret = 0;
out_put_ctrl:
nvme_put_ctrl(ctrl);
out_put_file:
filp_close(file, NULL);
out_unlock:
mutex_unlock(&subsys->lock);
return ret;

21
drivers/nvme/target/tcp.c
View File

@ -94,7 +94,6 @@ struct nvmet_tcp_queue {
struct socket *sock;
struct nvmet_tcp_port *port;
struct work_struct io_work;
int cpu;
struct nvmet_cq nvme_cq;
struct nvmet_sq nvme_sq;
@ -144,7 +143,6 @@ struct nvmet_tcp_port {
struct work_struct accept_work;
struct nvmet_port *nport;
struct sockaddr_storage addr;
int last_cpu;
void (*data_ready)(struct sock *);
};
@ -219,6 +217,11 @@ static inline void nvmet_tcp_put_cmd(struct nvmet_tcp_cmd *cmd)
list_add_tail(&cmd->entry, &cmd->queue->free_list);
}
static inline int queue_cpu(struct nvmet_tcp_queue *queue)
{
return queue->sock->sk->sk_incoming_cpu;
}
static inline u8 nvmet_tcp_hdgst_len(struct nvmet_tcp_queue *queue)
{
return queue->hdr_digest ? NVME_TCP_DIGEST_LENGTH : 0;
@ -506,7 +509,7 @@ static void nvmet_tcp_queue_response(struct nvmet_req *req)
struct nvmet_tcp_queue *queue = cmd->queue;
llist_add(&cmd->lentry, &queue->resp_list);
queue_work_on(cmd->queue->cpu, nvmet_tcp_wq, &cmd->queue->io_work);
queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &cmd->queue->io_work);
}
static int nvmet_try_send_data_pdu(struct nvmet_tcp_cmd *cmd)
@ -1223,7 +1226,7 @@ static void nvmet_tcp_io_work(struct work_struct *w)
* We exahusted our budget, requeue our selves
*/
if (pending)
queue_work_on(queue->cpu, nvmet_tcp_wq, &queue->io_work);
queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);
}
static int nvmet_tcp_alloc_cmd(struct nvmet_tcp_queue *queue,
@ -1383,7 +1386,7 @@ static void nvmet_tcp_data_ready(struct sock *sk)
read_lock_bh(&sk->sk_callback_lock);
queue = sk->sk_user_data;
if (likely(queue))
queue_work_on(queue->cpu, nvmet_tcp_wq, &queue->io_work);
queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);
read_unlock_bh(&sk->sk_callback_lock);
}
@ -1403,7 +1406,7 @@ static void nvmet_tcp_write_space(struct sock *sk)
if (sk_stream_is_writeable(sk)) {
clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
queue_work_on(queue->cpu, nvmet_tcp_wq, &queue->io_work);
queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);
}
out:
read_unlock_bh(&sk->sk_callback_lock);
@ -1512,9 +1515,6 @@ static int nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
if (ret)
goto out_free_connect;
port->last_cpu = cpumask_next_wrap(port->last_cpu,
cpu_online_mask, -1, false);
queue->cpu = port->last_cpu;
nvmet_prepare_receive_pdu(queue);
mutex_lock(&nvmet_tcp_queue_mutex);
@ -1525,7 +1525,7 @@ static int nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
if (ret)
goto out_destroy_sq;
queue_work_on(queue->cpu, nvmet_tcp_wq, &queue->io_work);
queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);
return 0;
out_destroy_sq:
@ -1612,7 +1612,6 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport)
}
port->nport = nport;
port->last_cpu = -1;
INIT_WORK(&port->accept_work, nvmet_tcp_accept_work);
if (port->nport->inline_data_size < 0)
port->nport->inline_data_size = NVMET_TCP_DEF_INLINE_DATA_SIZE;

3
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -8,6 +8,8 @@
#define _HISI_SAS_H_
#include <linux/acpi.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-pci.h>
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/dmapool.h>
@ -431,7 +433,6 @@ struct hisi_hba {
u32 intr_coal_count; /* Interrupt count to coalesce */
int cq_nvecs;
unsigned int *reply_map;
/* bist */
enum sas_linkrate debugfs_bist_linkrate;

36
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -417,6 +417,7 @@ static int hisi_sas_task_prep(struct sas_task *task,
struct device *dev = hisi_hba->dev;
int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
struct scsi_cmnd *scmd = NULL;
struct hisi_sas_dq *dq;
unsigned long flags;
int wr_q_index;
@ -432,10 +433,23 @@ static int hisi_sas_task_prep(struct sas_task *task,
return -ECOMM;
}
if (hisi_hba->reply_map) {
int cpu = raw_smp_processor_id();
unsigned int dq_index = hisi_hba->reply_map[cpu];
if (task->uldd_task) {
struct ata_queued_cmd *qc;
if (dev_is_sata(device)) {
qc = task->uldd_task;
scmd = qc->scsicmd;
} else {
scmd = task->uldd_task;
}
}
if (scmd) {
unsigned int dq_index;
u32 blk_tag;
blk_tag = blk_mq_unique_tag(scmd->request);
dq_index = blk_mq_unique_tag_to_hwq(blk_tag);
*dq_pointer = dq = &hisi_hba->dq[dq_index];
} else {
*dq_pointer = dq = sas_dev->dq;
@ -464,21 +478,9 @@ static int hisi_sas_task_prep(struct sas_task *task,
if (hisi_hba->hw->slot_index_alloc)
rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
else {
struct scsi_cmnd *scsi_cmnd = NULL;
else
rc = hisi_sas_slot_index_alloc(hisi_hba, scmd);
if (task->uldd_task) {
struct ata_queued_cmd *qc;
if (dev_is_sata(device)) {
qc = task->uldd_task;
scsi_cmnd = qc->scsicmd;
} else {
scsi_cmnd = task->uldd_task;
}
}
rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
}
if (rc < 0)
goto err_out_dif_dma_unmap;

87
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
View File

@ -2362,68 +2362,36 @@ static irqreturn_t cq_interrupt_v3_hw(int irq_no, void *p)
return IRQ_WAKE_THREAD;
}
static void setup_reply_map_v3_hw(struct hisi_hba *hisi_hba, int nvecs)
static int interrupt_preinit_v3_hw(struct hisi_hba *hisi_hba)
{
const struct cpumask *mask;
int queue, cpu;
int vectors;
int max_msi = HISI_SAS_MSI_COUNT_V3_HW, min_msi;
struct Scsi_Host *shost = hisi_hba->shost;
struct irq_affinity desc = {
.pre_vectors = BASE_VECTORS_V3_HW,
};
for (queue = 0; queue < nvecs; queue++) {
struct hisi_sas_cq *cq = &hisi_hba->cq[queue];
min_msi = MIN_AFFINE_VECTORS_V3_HW;
vectors = pci_alloc_irq_vectors_affinity(hisi_hba->pci_dev,
min_msi, max_msi,
PCI_IRQ_MSI |
PCI_IRQ_AFFINITY,
&desc);
if (vectors < 0)
return -ENOENT;
mask = pci_irq_get_affinity(hisi_hba->pci_dev, queue +
BASE_VECTORS_V3_HW);
if (!mask)
goto fallback;
cq->irq_mask = mask;
for_each_cpu(cpu, mask)
hisi_hba->reply_map[cpu] = queue;
}
return;
fallback:
for_each_possible_cpu(cpu)
hisi_hba->reply_map[cpu] = cpu % hisi_hba->queue_count;
/* Don't clean all CQ masks */
hisi_hba->cq_nvecs = vectors - BASE_VECTORS_V3_HW;
shost->nr_hw_queues = hisi_hba->cq_nvecs;
return 0;
}
static int interrupt_init_v3_hw(struct hisi_hba *hisi_hba)
{
struct device *dev = hisi_hba->dev;
struct pci_dev *pdev = hisi_hba->pci_dev;
int vectors, rc, i;
int max_msi = HISI_SAS_MSI_COUNT_V3_HW, min_msi;
if (auto_affine_msi_experimental) {
struct irq_affinity desc = {
.pre_vectors = BASE_VECTORS_V3_HW,
};
dev_info(dev, "Enable MSI auto-affinity\n");
min_msi = MIN_AFFINE_VECTORS_V3_HW;
hisi_hba->reply_map = devm_kcalloc(dev, nr_cpu_ids,
sizeof(unsigned int),
GFP_KERNEL);
if (!hisi_hba->reply_map)
return -ENOMEM;
vectors = pci_alloc_irq_vectors_affinity(hisi_hba->pci_dev,
min_msi, max_msi,
PCI_IRQ_MSI |
PCI_IRQ_AFFINITY,
&desc);
if (vectors < 0)
return -ENOENT;
setup_reply_map_v3_hw(hisi_hba, vectors - BASE_VECTORS_V3_HW);
} else {
min_msi = max_msi;
vectors = pci_alloc_irq_vectors(hisi_hba->pci_dev, min_msi,
max_msi, PCI_IRQ_MSI);
if (vectors < 0)
return vectors;
}
hisi_hba->cq_nvecs = vectors - BASE_VECTORS_V3_HW;
int rc, i;
rc = devm_request_irq(dev, pci_irq_vector(pdev, 1),
int_phy_up_down_bcast_v3_hw, 0,
@ -3072,6 +3040,15 @@ static int debugfs_set_bist_v3_hw(struct hisi_hba *hisi_hba, bool enable)
return 0;
}
static int hisi_sas_map_queues(struct Scsi_Host *shost)
{
struct hisi_hba *hisi_hba = shost_priv(shost);
struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
return blk_mq_pci_map_queues(qmap, hisi_hba->pci_dev,
BASE_VECTORS_V3_HW);
}
static struct scsi_host_template sht_v3_hw = {
.name = DRV_NAME,
.proc_name = DRV_NAME,
@ -3082,6 +3059,7 @@ static struct scsi_host_template sht_v3_hw = {
.slave_configure = hisi_sas_slave_configure,
.scan_finished = hisi_sas_scan_finished,
.scan_start = hisi_sas_scan_start,
.map_queues = hisi_sas_map_queues,
.change_queue_depth = sas_change_queue_depth,
.bios_param = sas_bios_param,
.this_id = -1,
@ -3098,6 +3076,7 @@ static struct scsi_host_template sht_v3_hw = {
.shost_attrs = host_attrs_v3_hw,
.tag_alloc_policy = BLK_TAG_ALLOC_RR,
.host_reset = hisi_sas_host_reset,
.host_tagset = 1,
};
static const struct hisi_sas_hw hisi_sas_v3_hw = {
@ -3269,6 +3248,10 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (hisi_sas_debugfs_enable)
hisi_sas_debugfs_init(hisi_hba);
rc = interrupt_preinit_v3_hw(hisi_hba);
if (rc)
goto err_out_ha;
dev_err(dev, "%d hw queues\n", shost->nr_hw_queues);
rc = scsi_add_host(shost, dev);
if (rc)
goto err_out_ha;

1
drivers/scsi/hosts.c
View File

@ -421,6 +421,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
shost->cmd_per_lun = sht->cmd_per_lun;
shost->unchecked_isa_dma = sht->unchecked_isa_dma;
shost->no_write_same = sht->no_write_same;
shost->host_tagset = sht->host_tagset;
if (shost_eh_deadline == -1 || !sht->eh_host_reset_handler)
shost->eh_deadline = -1;

39
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@ -37,6 +37,7 @@
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/irq_poll.h>
#include <linux/blk-mq-pci.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@ -113,6 +114,10 @@ unsigned int enable_sdev_max_qd;
module_param(enable_sdev_max_qd, int, 0444);
MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
int host_tagset_enable = 1;
module_param(host_tagset_enable, int, 0444);
MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
@ -3119,6 +3124,19 @@ megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
return 0;
}
static int megasas_map_queues(struct Scsi_Host *shost)
{
struct megasas_instance *instance;
instance = (struct megasas_instance *)shost->hostdata;
if (shost->nr_hw_queues == 1)
return 0;
return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
instance->pdev, instance->low_latency_index_start);
}
static void megasas_aen_polling(struct work_struct *work);
/**
@ -3427,6 +3445,7 @@ static struct scsi_host_template megasas_template = {
.eh_timed_out = megasas_reset_timer,
.shost_attrs = megaraid_host_attrs,
.bios_param = megasas_bios_param,
.map_queues = megasas_map_queues,
.change_queue_depth = scsi_change_queue_depth,
.max_segment_size = 0xffffffff,
};
@ -6808,6 +6827,26 @@ static int megasas_io_attach(struct megasas_instance *instance)
host->max_lun = MEGASAS_MAX_LUN;
host->max_cmd_len = 16;
/* Use shared host tagset only for fusion adaptors
* if there are managed interrupts (smp affinity enabled case).
* Single msix_vectors in kdump, so shared host tag is also disabled.
*/
host->host_tagset = 0;
host->nr_hw_queues = 1;
if ((instance->adapter_type != MFI_SERIES) &&
(instance->msix_vectors > instance->low_latency_index_start) &&
host_tagset_enable &&
instance->smp_affinity_enable) {
host->host_tagset = 1;
host->nr_hw_queues = instance->msix_vectors -
instance->low_latency_index_start;
}
dev_info(&instance->pdev->dev,
"Max firmware commands: %d shared with nr_hw_queues = %d\n",
instance->max_fw_cmds, host->nr_hw_queues);
/*
* Notify the mid-layer about the new controller
*/

29
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -359,24 +359,29 @@ megasas_get_msix_index(struct megasas_instance *instance,
{
int sdev_busy;
/* nr_hw_queue = 1 for MegaRAID */
struct blk_mq_hw_ctx *hctx =
scmd->device->request_queue->queue_hw_ctx[0];
sdev_busy = atomic_read(&hctx->nr_active);
/* TBD - if sml remove device_busy in future, driver
* should track counter in internal structure.
*/
sdev_busy = atomic_read(&scmd->device->device_busy);
if (instance->perf_mode == MR_BALANCED_PERF_MODE &&
sdev_busy > (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))
sdev_busy > (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH)) {
cmd->request_desc->SCSIIO.MSIxIndex =
mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
else if (instance->msix_load_balance)
} else if (instance->msix_load_balance) {
cmd->request_desc->SCSIIO.MSIxIndex =
(mega_mod64(atomic64_add_return(1, &instance->total_io_count),
instance->msix_vectors));
else
} else if (instance->host->nr_hw_queues > 1) {
u32 tag = blk_mq_unique_tag(scmd->request);
cmd->request_desc->SCSIIO.MSIxIndex = blk_mq_unique_tag_to_hwq(tag) +
instance->low_latency_index_start;
} else {
cmd->request_desc->SCSIIO.MSIxIndex =
instance->reply_map[raw_smp_processor_id()];
}
}
/**
@ -956,9 +961,6 @@ megasas_alloc_cmds_fusion(struct megasas_instance *instance)
if (megasas_alloc_cmdlist_fusion(instance))
goto fail_exit;
dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
instance->max_fw_cmds);
/* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
@ -1102,8 +1104,9 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
instance->perf_mode = MR_BALANCED_PERF_MODE;
dev_info(&instance->pdev->dev, "Performance mode :%s\n",
MEGASAS_PERF_MODE_2STR(instance->perf_mode));
dev_info(&instance->pdev->dev, "Performance mode :%s (latency index = %d)\n",
MEGASAS_PERF_MODE_2STR(instance->perf_mode),
instance->low_latency_index_start);
instance->fw_sync_cache_support = (scratch_pad_1 &
MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;

28
drivers/scsi/scsi_debug.c
View File

@ -4696,19 +4696,14 @@ fini:
static struct sdebug_queue *get_queue(struct scsi_cmnd *cmnd)
{
u16 hwq;
u32 tag = blk_mq_unique_tag(cmnd->request);
if (sdebug_host_max_queue) {
/* Provide a simple method to choose the hwq */
hwq = smp_processor_id() % submit_queues;
} else {
u32 tag = blk_mq_unique_tag(cmnd->request);
hwq = blk_mq_unique_tag_to_hwq(tag);
hwq = blk_mq_unique_tag_to_hwq(tag);
pr_debug("tag=%#x, hwq=%d\n", tag, hwq);
if (WARN_ON_ONCE(hwq >= submit_queues))
hwq = 0;
pr_debug("tag=%#x, hwq=%d\n", tag, hwq);
if (WARN_ON_ONCE(hwq >= submit_queues))
hwq = 0;
}
return sdebug_q_arr + hwq;
}
@ -7347,10 +7342,7 @@ static int sdebug_driver_probe(struct device *dev)
sdbg_host = to_sdebug_host(dev);
if (sdebug_host_max_queue)
sdebug_driver_template.can_queue = sdebug_host_max_queue;
else
sdebug_driver_template.can_queue = sdebug_max_queue;
sdebug_driver_template.can_queue = sdebug_max_queue;
if (!sdebug_clustering)
sdebug_driver_template.dma_boundary = PAGE_SIZE - 1;
@ -7367,11 +7359,11 @@ static int sdebug_driver_probe(struct device *dev)
}
/*
* Decide whether to tell scsi subsystem that we want mq. The
* following should give the same answer for each host. If the host
* has a limit of hostwide max commands, then do not set.
* following should give the same answer for each host.
*/
if (!sdebug_host_max_queue)
hpnt->nr_hw_queues = submit_queues;
hpnt->nr_hw_queues = submit_queues;
if (sdebug_host_max_queue)
hpnt->host_tagset = 1;
sdbg_host->shost = hpnt;
*((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host;

2
drivers/scsi/scsi_lib.c
View File

@ -1891,6 +1891,8 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost)
tag_set->flags |=
BLK_ALLOC_POLICY_TO_MQ_FLAG(shost->hostt->tag_alloc_policy);
tag_set->driver_data = shost;
if (shost->host_tagset)
tag_set->flags |= BLK_MQ_F_TAG_HCTX_SHARED;
return blk_mq_alloc_tag_set(tag_set);
}

11
drivers/scsi/scsi_sysfs.c
View File

@ -393,6 +393,16 @@ show_use_blk_mq(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR(use_blk_mq, S_IRUGO, show_use_blk_mq, NULL);
static ssize_t
show_nr_hw_queues(struct device *dev, struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct blk_mq_tag_set *tag_set = &shost->tag_set;
return snprintf(buf, 20, "%d\n", tag_set->nr_hw_queues);
}
static DEVICE_ATTR(nr_hw_queues, S_IRUGO, show_nr_hw_queues, NULL);
static struct attribute *scsi_sysfs_shost_attrs[] = {
&dev_attr_use_blk_mq.attr,
&dev_attr_unique_id.attr,
@ -411,6 +421,7 @@ static struct attribute *scsi_sysfs_shost_attrs[] = {
&dev_attr_prot_guard_type.attr,
&dev_attr_host_reset.attr,
&dev_attr_eh_deadline.attr,
&dev_attr_nr_hw_queues.attr,
NULL
};

23
include/linux/async_tx.h
View File

@ -162,11 +162,22 @@ struct dma_async_tx_descriptor *
async_xor(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_xor_offs(struct page *dest, unsigned int offset,
struct page **src_list, unsigned int *src_offset,
int src_cnt, size_t len, struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_xor_val(struct page *dest, struct page **src_list, unsigned int offset,
int src_cnt, size_t len, enum sum_check_flags *result,
struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_xor_val_offs(struct page *dest, unsigned int offset,
struct page **src_list, unsigned int *src_offset,
int src_cnt, size_t len, enum sum_check_flags *result,
struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
unsigned int src_offset, size_t len,
@ -175,21 +186,23 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
struct dma_async_tx_descriptor *async_trigger_callback(struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_gen_syndrome(struct page **blocks, unsigned int offset, int src_cnt,
async_gen_syndrome(struct page **blocks, unsigned int *offsets, int src_cnt,
size_t len, struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_syndrome_val(struct page **blocks, unsigned int offset, int src_cnt,
async_syndrome_val(struct page **blocks, unsigned int *offsets, int src_cnt,
size_t len, enum sum_check_flags *pqres, struct page *spare,
struct async_submit_ctl *submit);
unsigned int s_off, struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_raid6_2data_recov(int src_num, size_t bytes, int faila, int failb,
struct page **ptrs, struct async_submit_ctl *submit);
struct page **ptrs, unsigned int *offs,
struct async_submit_ctl *submit);
struct dma_async_tx_descriptor *
async_raid6_datap_recov(int src_num, size_t bytes, int faila,
struct page **ptrs, struct async_submit_ctl *submit);
struct page **ptrs, unsigned int *offs,
struct async_submit_ctl *submit);
void async_tx_quiesce(struct dma_async_tx_descriptor **tx);
#endif /* _ASYNC_TX_H_ */

4
include/linux/blkdev.h
View File

@ -698,7 +698,9 @@ static inline bool queue_is_mq(struct request_queue *q)
static inline enum blk_zoned_model
blk_queue_zoned_model(struct request_queue *q)
{
return q->limits.zoned;
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED))
return q->limits.zoned;
return BLK_ZONED_NONE;
}
static inline bool blk_queue_is_zoned(struct request_queue *q)

9
include/scsi/scsi_host.h
View File

@ -436,6 +436,9 @@ struct scsi_host_template {
/* True if the controller does not support WRITE SAME */
unsigned no_write_same:1;
/* True if the host uses host-wide tagspace */
unsigned host_tagset:1;
/*
* Countdown for host blocking with no commands outstanding.
*/
@ -603,7 +606,8 @@ struct Scsi_Host {
*
* Note: it is assumed that each hardware queue has a queue depth of
* can_queue. In other words, the total queue depth per host
* is nr_hw_queues * can_queue.
* is nr_hw_queues * can_queue. However, for when host_tagset is set,
* the total queue depth is can_queue.
*/
unsigned nr_hw_queues;
unsigned active_mode:2;
@ -634,6 +638,9 @@ struct Scsi_Host {
/* The controller does not support WRITE SAME */
unsigned no_write_same:1;
/* True if the host uses host-wide tagspace */
unsigned host_tagset:1;
/* Host responded with short (<36 bytes) INQUIRY result */
unsigned short_inquiry:1;

4
include/trace/events/bcache.h
View File

@ -164,7 +164,7 @@ TRACE_EVENT(bcache_write,
),
TP_fast_assign(
memcpy(__entry->uuid, c->sb.set_uuid, 16);
memcpy(__entry->uuid, c->set_uuid, 16);
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
@ -200,7 +200,7 @@ DECLARE_EVENT_CLASS(cache_set,
),
TP_fast_assign(
memcpy(__entry->uuid, c->sb.set_uuid, 16);
memcpy(__entry->uuid, c->set_uuid, 16);
),
TP_printk("%pU", __entry->uuid)

5
include/uapi/linux/cdrom.h
View File

@ -289,7 +289,10 @@ struct cdrom_generic_command
unsigned char data_direction;
int quiet;
int timeout;
void __user *reserved[1]; /* unused, actually */
union {
void __user *reserved[1]; /* unused, actually */
void __user *unused;
};
};
/*