redonkable/alistair23-linux
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Merge branch 'xfs-for-3.9'

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This commit is contained in:
Ben Myers 2012-12-31 10:41:39 -06:00
parent a49f0d1ea3 ec47eb6b0b
commit 56431cd194
10 changed files with 57 additions and 238 deletions
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12
fs/xfs/xfs_buf.c
View file

@ -175,7 +175,7 @@ xfs_buf_get_maps(
bp->b_map_count = map_count;
if (map_count == 1) {
bp->b_maps = &bp->b_map;
bp->b_maps = &bp->__b_map;
return 0;
}
@ -193,7 +193,7 @@ static void
xfs_buf_free_maps(
struct xfs_buf *bp)
{
if (bp->b_maps != &bp->b_map) {
if (bp->b_maps != &bp->__b_map) {
kmem_free(bp->b_maps);
bp->b_maps = NULL;
}
@ -377,8 +377,8 @@ xfs_buf_allocate_memory(
}
use_alloc_page:
start = BBTOB(bp->b_map.bm_bn) >> PAGE_SHIFT;
end = (BBTOB(bp->b_map.bm_bn + bp->b_length) + PAGE_SIZE - 1)
start = BBTOB(bp->b_maps[0].bm_bn) >> PAGE_SHIFT;
end = (BBTOB(bp->b_maps[0].bm_bn + bp->b_length) + PAGE_SIZE - 1)
>> PAGE_SHIFT;
page_count = end - start;
error = _xfs_buf_get_pages(bp, page_count, flags);
@ -640,7 +640,7 @@ _xfs_buf_read(
xfs_buf_flags_t flags)
{
ASSERT(!(flags & XBF_WRITE));
ASSERT(bp->b_map.bm_bn != XFS_BUF_DADDR_NULL);
ASSERT(bp->b_maps[0].bm_bn != XFS_BUF_DADDR_NULL);
bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_READ_AHEAD);
bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD);
@ -1709,7 +1709,7 @@ xfs_buf_cmp(
struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list);
xfs_daddr_t diff;
diff = ap->b_map.bm_bn - bp->b_map.bm_bn;
diff = ap->b_maps[0].bm_bn - bp->b_maps[0].bm_bn;
if (diff < 0)
return -1;
if (diff > 0)

6
fs/xfs/xfs_buf.h
View file

@ -151,7 +151,7 @@ typedef struct xfs_buf {
struct page **b_pages; /* array of page pointers */
struct page *b_page_array[XB_PAGES]; /* inline pages */
struct xfs_buf_map *b_maps; /* compound buffer map */
struct xfs_buf_map b_map; /* inline compound buffer map */
struct xfs_buf_map __b_map; /* inline compound buffer map */
int b_map_count;
int b_io_length; /* IO size in BBs */
atomic_t b_pin_count; /* pin count */
@ -330,8 +330,8 @@ void xfs_buf_stale(struct xfs_buf *bp);
* In future, uncached buffers will pass the block number directly to the io
* request function and hence these macros will go away at that point.
*/
#define XFS_BUF_ADDR(bp) ((bp)->b_map.bm_bn)
#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_map.bm_bn = (xfs_daddr_t)(bno))
#define XFS_BUF_ADDR(bp) ((bp)->b_maps[0].bm_bn)
#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_maps[0].bm_bn = (xfs_daddr_t)(bno))
static inline void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref)
{

153
fs/xfs/xfs_buf_item.c
View file

@ -37,109 +37,6 @@ static inline struct xfs_buf_log_item *BUF_ITEM(struct xfs_log_item *lip)
return container_of(lip, struct xfs_buf_log_item, bli_item);
}
#ifdef XFS_TRANS_DEBUG
/*
* This function uses an alternate strategy for tracking the bytes
* that the user requests to be logged. This can then be used
* in conjunction with the bli_orig array in the buf log item to
* catch bugs in our callers' code.
*
* We also double check the bits set in xfs_buf_item_log using a
* simple algorithm to check that every byte is accounted for.
*/
STATIC void
xfs_buf_item_log_debug(
xfs_buf_log_item_t *bip,
uint first,
uint last)
{
uint x;
uint byte;
uint nbytes;
uint chunk_num;
uint word_num;
uint bit_num;
uint bit_set;
uint *wordp;
ASSERT(bip->bli_logged != NULL);
byte = first;
nbytes = last - first + 1;
bfset(bip->bli_logged, first, nbytes);
for (x = 0; x < nbytes; x++) {
chunk_num = byte >> XFS_BLF_SHIFT;
word_num = chunk_num >> BIT_TO_WORD_SHIFT;
bit_num = chunk_num & (NBWORD - 1);
wordp = &(bip->bli_format.blf_data_map[word_num]);
bit_set = *wordp & (1 << bit_num);
ASSERT(bit_set);
byte++;
}
}
/*
* This function is called when we flush something into a buffer without
* logging it. This happens for things like inodes which are logged
* separately from the buffer.
*/
void
xfs_buf_item_flush_log_debug(
xfs_buf_t *bp,
uint first,
uint last)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
uint nbytes;
if (bip == NULL || (bip->bli_item.li_type != XFS_LI_BUF))
return;
ASSERT(bip->bli_logged != NULL);
nbytes = last - first + 1;
bfset(bip->bli_logged, first, nbytes);
}
/*
* This function is called to verify that our callers have logged
* all the bytes that they changed.
*
* It does this by comparing the original copy of the buffer stored in
* the buf log item's bli_orig array to the current copy of the buffer
* and ensuring that all bytes which mismatch are set in the bli_logged
* array of the buf log item.
*/
STATIC void
xfs_buf_item_log_check(
xfs_buf_log_item_t *bip)
{
char *orig;
char *buffer;
int x;
xfs_buf_t *bp;
ASSERT(bip->bli_orig != NULL);
ASSERT(bip->bli_logged != NULL);
bp = bip->bli_buf;
ASSERT(bp->b_length > 0);
ASSERT(bp->b_addr != NULL);
orig = bip->bli_orig;
buffer = bp->b_addr;
for (x = 0; x < BBTOB(bp->b_length); x++) {
if (orig[x] != buffer[x] && !btst(bip->bli_logged, x)) {
xfs_emerg(bp->b_mount,
"%s: bip %x buffer %x orig %x index %d",
__func__, bip, bp, orig, x);
ASSERT(0);
}
}
}
#else
#define xfs_buf_item_log_debug(x,y,z)
#define xfs_buf_item_log_check(x)
#endif
STATIC void xfs_buf_do_callbacks(struct xfs_buf *bp);
/*
@ -237,7 +134,7 @@ xfs_buf_item_size(
* cancel flag in it.
*/
trace_xfs_buf_item_size_stale(bip);
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
return bip->bli_format_count;
}
@ -278,7 +175,7 @@ xfs_buf_item_format_segment(
uint buffer_offset;
/* copy the flags across from the base format item */
blfp->blf_flags = bip->bli_format.blf_flags;
blfp->blf_flags = bip->__bli_format.blf_flags;
/*
* Base size is the actual size of the ondisk structure - it reflects
@ -287,6 +184,17 @@ xfs_buf_item_format_segment(
*/
base_size = offsetof(struct xfs_buf_log_format, blf_data_map) +
(blfp->blf_map_size * sizeof(blfp->blf_data_map[0]));
nvecs = 0;
first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0);
if (!(bip->bli_flags & XFS_BLI_STALE) && first_bit == -1) {
/*
* If the map is not be dirty in the transaction, mark
* the size as zero and do not advance the vector pointer.
*/
goto out;
}
vecp->i_addr = blfp;
vecp->i_len = base_size;
vecp->i_type = XLOG_REG_TYPE_BFORMAT;
@ -301,15 +209,13 @@ xfs_buf_item_format_segment(
*/
trace_xfs_buf_item_format_stale(bip);
ASSERT(blfp->blf_flags & XFS_BLF_CANCEL);
blfp->blf_size = nvecs;
return vecp;
goto out;
}
/*
* Fill in an iovec for each set of contiguous chunks.
*/
first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0);
ASSERT(first_bit != -1);
last_bit = first_bit;
nbits = 1;
for (;;) {
@ -371,7 +277,8 @@ xfs_buf_item_format_segment(
nbits++;
}
}
bip->bli_format.blf_size = nvecs;
out:
blfp->blf_size = nvecs;
return vecp;
}
@ -405,7 +312,7 @@ xfs_buf_item_format(
if (bip->bli_flags & XFS_BLI_INODE_BUF) {
if (!((bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF) &&
xfs_log_item_in_current_chkpt(lip)))
bip->bli_format.blf_flags |= XFS_BLF_INODE_BUF;
bip->__bli_format.blf_flags |= XFS_BLF_INODE_BUF;
bip->bli_flags &= ~XFS_BLI_INODE_BUF;
}
@ -419,7 +326,6 @@ xfs_buf_item_format(
* Check to make sure everything is consistent.
*/
trace_xfs_buf_item_format(bip);
xfs_buf_item_log_check(bip);
}
/*
@ -485,7 +391,7 @@ xfs_buf_item_unpin(
ASSERT(bip->bli_flags & XFS_BLI_STALE);
ASSERT(xfs_buf_islocked(bp));
ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
trace_xfs_buf_item_unpin_stale(bip);
@ -601,7 +507,7 @@ xfs_buf_item_unlock(
{
struct xfs_buf_log_item *bip = BUF_ITEM(lip);
struct xfs_buf *bp = bip->bli_buf;
int aborted;
int aborted, clean, i;
uint hold;
/* Clear the buffer's association with this transaction. */
@ -631,7 +537,7 @@ xfs_buf_item_unlock(
*/
if (bip->bli_flags & XFS_BLI_STALE) {
trace_xfs_buf_item_unlock_stale(bip);
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
if (!aborted) {
atomic_dec(&bip->bli_refcount);
return;
@ -644,8 +550,15 @@ xfs_buf_item_unlock(
* If the buf item isn't tracking any data, free it, otherwise drop the
* reference we hold to it.
*/
if (xfs_bitmap_empty(bip->bli_format.blf_data_map,
bip->bli_format.blf_map_size))
clean = 1;
for (i = 0; i < bip->bli_format_count; i++) {
if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map,
bip->bli_formats[i].blf_map_size)) {
clean = 0;
break;
}
}
if (clean)
xfs_buf_item_relse(bp);
else
atomic_dec(&bip->bli_refcount);
@ -716,7 +629,7 @@ xfs_buf_item_get_format(
bip->bli_format_count = count;
if (count == 1) {
bip->bli_formats = &bip->bli_format;
bip->bli_formats = &bip->__bli_format;
return 0;
}
@ -731,7 +644,7 @@ STATIC void
xfs_buf_item_free_format(
struct xfs_buf_log_item *bip)
{
if (bip->bli_formats != &bip->bli_format) {
if (bip->bli_formats != &bip->__bli_format) {
kmem_free(bip->bli_formats);
bip->bli_formats = NULL;
}
@ -898,8 +811,6 @@ xfs_buf_item_log_segment(
mask = (1 << end_bit) - 1;
*wordp |= mask;
}
xfs_buf_item_log_debug(bip, first, last);
}
/*

16
fs/xfs/xfs_buf_item.h
View file

@ -98,13 +98,9 @@ typedef struct xfs_buf_log_item {
unsigned int bli_flags; /* misc flags */
unsigned int bli_recur; /* lock recursion count */
atomic_t bli_refcount; /* cnt of tp refs */
#ifdef XFS_TRANS_DEBUG
char *bli_orig; /* original buffer copy */
char *bli_logged; /* bytes logged (bitmap) */
#endif
int bli_format_count; /* count of headers */
struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
struct xfs_buf_log_format bli_format; /* embedded in-log header */
struct xfs_buf_log_format __bli_format; /* embedded in-log header */
} xfs_buf_log_item_t;
void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
@ -117,16 +113,6 @@ void xfs_buf_attach_iodone(struct xfs_buf *,
void xfs_buf_iodone_callbacks(struct xfs_buf *);
void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *);
#ifdef XFS_TRANS_DEBUG
void
xfs_buf_item_flush_log_debug(
struct xfs_buf *bp,
uint first,
uint last);
#else
#define xfs_buf_item_flush_log_debug(bp, first, last)
#endif
#endif /* __KERNEL__ */
#endif /* __XFS_BUF_ITEM_H__ */

6
fs/xfs/xfs_inode.c
View file

@ -2379,9 +2379,6 @@ xfs_iflush_fork(
char *cp;
xfs_ifork_t *ifp;
xfs_mount_t *mp;
#ifdef XFS_TRANS_DEBUG
int first;
#endif
static const short brootflag[2] =
{ XFS_ILOG_DBROOT, XFS_ILOG_ABROOT };
static const short dataflag[2] =
@ -2724,9 +2721,6 @@ xfs_iflush_int(
xfs_inode_log_item_t *iip;
xfs_dinode_t *dip;
xfs_mount_t *mp;
#ifdef XFS_TRANS_DEBUG
int first;
#endif
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
ASSERT(xfs_isiflocked(ip));

16
fs/xfs/xfs_inode_item.c
View file

@ -269,17 +269,6 @@ xfs_inode_item_format(
} else {
ASSERT(!(iip->ili_fields &
XFS_ILOG_DBROOT));
#ifdef XFS_TRANS_DEBUG
if (iip->ili_root_size > 0) {
ASSERT(iip->ili_root_size ==
ip->i_df.if_broot_bytes);
ASSERT(memcmp(iip->ili_orig_root,
ip->i_df.if_broot,
iip->ili_root_size) == 0);
} else {
ASSERT(ip->i_df.if_broot_bytes == 0);
}
#endif
iip->ili_fields &= ~XFS_ILOG_DBROOT;
}
break;
@ -678,11 +667,6 @@ void
xfs_inode_item_destroy(
xfs_inode_t *ip)
{
#ifdef XFS_TRANS_DEBUG
if (ip->i_itemp->ili_root_size != 0) {
kmem_free(ip->i_itemp->ili_orig_root);
}
#endif
kmem_zone_free(xfs_ili_zone, ip->i_itemp);
}

4
fs/xfs/xfs_inode_item.h
View file

@ -148,10 +148,6 @@ typedef struct xfs_inode_log_item {
data exts */
struct xfs_bmbt_rec *ili_aextents_buf; /* array of logged
attr exts */
#ifdef XFS_TRANS_DEBUG
int ili_root_size;
char *ili_orig_root;
#endif
xfs_inode_log_format_t ili_format; /* logged structure */
} xfs_inode_log_item_t;

14
fs/xfs/xfs_trans_ail.c
View file

@ -55,20 +55,6 @@ xfs_ail_check(
ASSERT(XFS_LSN_CMP(prev_lip->li_lsn, lip->li_lsn) >= 0);
#ifdef XFS_TRANS_DEBUG
/*
* Walk the list checking lsn ordering, and that every entry has the
* XFS_LI_IN_AIL flag set. This is really expensive, so only do it
* when specifically debugging the transaction subsystem.
*/
prev_lip = list_entry(&ailp->xa_ail, xfs_log_item_t, li_ail);
list_for_each_entry(lip, &ailp->xa_ail, li_ail) {
if (&prev_lip->li_ail != &ailp->xa_ail)
ASSERT(XFS_LSN_CMP(prev_lip->li_lsn, lip->li_lsn) <= 0);
ASSERT((lip->li_flags & XFS_LI_IN_AIL) != 0);
prev_lip = lip;
}
#endif /* XFS_TRANS_DEBUG */
}
#else /* !DEBUG */
#define xfs_ail_check(a,l)

27
fs/xfs/xfs_trans_buf.c
View file

@ -93,7 +93,7 @@ _xfs_trans_bjoin(
xfs_buf_item_init(bp, tp->t_mountp);
bip = bp->b_fspriv;
ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED));
if (reset_recur)
bip->bli_recur = 0;
@ -432,7 +432,7 @@ xfs_trans_brelse(xfs_trans_t *tp,
bip = bp->b_fspriv;
ASSERT(bip->bli_item.li_type == XFS_LI_BUF);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0);
trace_xfs_trans_brelse(bip);
@ -519,7 +519,7 @@ xfs_trans_bhold(xfs_trans_t *tp,
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->bli_flags |= XFS_BLI_HOLD;
@ -539,7 +539,7 @@ xfs_trans_bhold_release(xfs_trans_t *tp,
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0);
ASSERT(bip->bli_flags & XFS_BLI_HOLD);
@ -598,7 +598,7 @@ xfs_trans_log_buf(xfs_trans_t *tp,
bip->bli_flags &= ~XFS_BLI_STALE;
ASSERT(XFS_BUF_ISSTALE(bp));
XFS_BUF_UNSTALE(bp);
bip->bli_format.blf_flags &= ~XFS_BLF_CANCEL;
bip->__bli_format.blf_flags &= ~XFS_BLF_CANCEL;
}
tp->t_flags |= XFS_TRANS_DIRTY;
@ -643,6 +643,7 @@ xfs_trans_binval(
xfs_buf_t *bp)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
int i;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
@ -657,8 +658,8 @@ xfs_trans_binval(
*/
ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF));
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_INODE_BUF));
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
return;
@ -668,10 +669,12 @@ xfs_trans_binval(
bip->bli_flags |= XFS_BLI_STALE;
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
bip->bli_format.blf_flags |= XFS_BLF_CANCEL;
memset((char *)(bip->bli_format.blf_data_map), 0,
(bip->bli_format.blf_map_size * sizeof(uint)));
bip->__bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
bip->__bli_format.blf_flags |= XFS_BLF_CANCEL;
for (i = 0; i < bip->bli_format_count; i++) {
memset(bip->bli_formats[i].blf_data_map, 0,
(bip->bli_formats[i].blf_map_size * sizeof(uint)));
}
bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
tp->t_flags |= XFS_TRANS_DIRTY;
}
@ -775,5 +778,5 @@ xfs_trans_dquot_buf(
type == XFS_BLF_GDQUOT_BUF);
ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->bli_format.blf_flags |= type;
bip->__bli_format.blf_flags |= type;
}

41
fs/xfs/xfs_trans_inode.c
View file

@ -33,14 +33,6 @@
#include "xfs_inode_item.h"
#include "xfs_trace.h"
#ifdef XFS_TRANS_DEBUG
STATIC void
xfs_trans_inode_broot_debug(
xfs_inode_t *ip);
#else
#define xfs_trans_inode_broot_debug(ip)
#endif
/*
* Add a locked inode to the transaction.
*
@ -67,8 +59,6 @@ xfs_trans_ijoin(
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &iip->ili_item);
xfs_trans_inode_broot_debug(ip);
}
/*
@ -135,34 +125,3 @@ xfs_trans_log_inode(
flags |= ip->i_itemp->ili_last_fields;
ip->i_itemp->ili_fields |= flags;
}
#ifdef XFS_TRANS_DEBUG
/*
* Keep track of the state of the inode btree root to make sure we
* log it properly.
*/
STATIC void
xfs_trans_inode_broot_debug(
xfs_inode_t *ip)
{
xfs_inode_log_item_t *iip;
ASSERT(ip->i_itemp != NULL);
iip = ip->i_itemp;
if (iip->ili_root_size != 0) {
ASSERT(iip->ili_orig_root != NULL);
kmem_free(iip->ili_orig_root);
iip->ili_root_size = 0;
iip->ili_orig_root = NULL;
}
if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
ASSERT((ip->i_df.if_broot != NULL) &&
(ip->i_df.if_broot_bytes > 0));
iip->ili_root_size = ip->i_df.if_broot_bytes;
iip->ili_orig_root =
(char*)kmem_alloc(iip->ili_root_size, KM_SLEEP);
memcpy(iip->ili_orig_root, (char*)(ip->i_df.if_broot),
iip->ili_root_size);
}
}
#endif