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Changes for gfs2: 

- Use asynchronous glocks and timeouts to recover from deadlocks during rename
    and exchange: the lock ordering constraints the vfs uses are not sufficient
    to prevent deadlocks across multiple nodes.
  - Add support for IOMAP_ZERO and use iomap_zero_range to replace gfs2 specific
    code.
  - Various other minor fixes and cleanups.
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Merge tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Andreas Gruenbacher:

 - Use asynchronous glocks and timeouts to recover from deadlocks during
   rename and exchange: the lock ordering constraints the vfs uses are
   not sufficient to prevent deadlocks across multiple nodes.

 - Add support for IOMAP_ZERO and use iomap_zero_range to replace gfs2
   specific code.

 - Various other minor fixes and cleanups.

* tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps
  gfs2: Improve mmap write vs. truncate consistency
  gfs2: Use async glocks for rename
  gfs2: create function gfs2_glock_update_hold_time
  gfs2: separate holder for rgrps in gfs2_rename
  gfs2: Delete an unnecessary check before brelse()
  gfs2: Minor PAGE_SIZE arithmetic cleanups
  gfs2: Fix recovery slot bumping
  gfs2: Fix possible fs name overflows
  gfs2: untangle the logic in gfs2_drevalidate
  gfs2: Always mark inode dirty in fallocate
  gfs2: Minor gfs2_alloc_inode cleanup
  gfs2: implement gfs2_block_zero_range using iomap_zero_range
  gfs2: Add support for IOMAP_ZERO
  gfs2: gfs2_iomap_begin cleanup
alistair/sunxi64-5.4-dsi
Linus Torvalds 2019-09-21 14:42:59 -07:00
parent fbc246a12a f0b444b349
commit f7c3bf8fa7
16 changed files with 266 additions and 209 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/gfs2/aops.c
View File

@ -243,7 +243,7 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
{
struct inode *inode = mapping->host;
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned nrblocks = nr_pages * (PAGE_SIZE/inode->i_sb->s_blocksize);
unsigned nrblocks = nr_pages * (PAGE_SIZE >> inode->i_blkbits);
int i;
int ret;
@ -552,7 +552,7 @@ int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos,
unsigned size)
{
struct address_space *mapping = ip->i_inode.i_mapping;
unsigned long index = *pos / PAGE_SIZE;
unsigned long index = *pos >> PAGE_SHIFT;
unsigned offset = *pos & (PAGE_SIZE - 1);
unsigned copied = 0;
unsigned amt;

195
fs/gfs2/bmap.c
View File

@ -1065,54 +1065,38 @@ static int gfs2_iomap_begin_write(struct inode *inode, loff_t pos,
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
bool unstuff, alloc_required;
bool unstuff;
int ret;
ret = gfs2_write_lock(inode);
if (ret)
return ret;
unstuff = gfs2_is_stuffed(ip) &&
pos + length > gfs2_max_stuffed_size(ip);
ret = gfs2_iomap_get(inode, pos, length, flags, iomap, mp);
if (ret)
goto out_unlock;
if (unstuff || iomap->type == IOMAP_HOLE) {
unsigned int data_blocks, ind_blocks;
struct gfs2_alloc_parms ap = {};
unsigned int rblocks;
struct gfs2_trans *tr;
alloc_required = unstuff || iomap->type == IOMAP_HOLE;
if (alloc_required || gfs2_is_jdata(ip))
gfs2_write_calc_reserv(ip, iomap->length, &data_blocks,
&ind_blocks);
if (alloc_required) {
struct gfs2_alloc_parms ap = {
.target = data_blocks + ind_blocks
};
ap.target = data_blocks + ind_blocks;
ret = gfs2_quota_lock_check(ip, &ap);
if (ret)
goto out_unlock;
return ret;
ret = gfs2_inplace_reserve(ip, &ap);
if (ret)
goto out_qunlock;
}
rblocks = RES_DINODE + ind_blocks;
if (gfs2_is_jdata(ip))
rblocks += data_blocks;
if (ind_blocks || data_blocks)
rblocks += RES_STATFS + RES_QUOTA;
if (inode == sdp->sd_rindex)
rblocks += 2 * RES_STATFS;
if (alloc_required)
rblocks = RES_DINODE + ind_blocks;
if (gfs2_is_jdata(ip))
rblocks += data_blocks;
if (ind_blocks || data_blocks)
rblocks += RES_STATFS + RES_QUOTA;
if (inode == sdp->sd_rindex)
rblocks += 2 * RES_STATFS;
rblocks += gfs2_rg_blocks(ip, data_blocks + ind_blocks);
if (unstuff || iomap->type == IOMAP_HOLE) {
struct gfs2_trans *tr;
ret = gfs2_trans_begin(sdp, rblocks,
iomap->length >> inode->i_blkbits);
if (ret)
@ -1153,16 +1137,17 @@ static int gfs2_iomap_begin_write(struct inode *inode, loff_t pos,
out_trans_end:
gfs2_trans_end(sdp);
out_trans_fail:
if (alloc_required)
gfs2_inplace_release(ip);
gfs2_inplace_release(ip);
out_qunlock:
if (alloc_required)
gfs2_quota_unlock(ip);
out_unlock:
gfs2_write_unlock(inode);
gfs2_quota_unlock(ip);
return ret;
}
static inline bool gfs2_iomap_need_write_lock(unsigned flags)
{
return (flags & IOMAP_WRITE) && !(flags & IOMAP_DIRECT);
}
static int gfs2_iomap_begin(struct inode *inode, loff_t pos, loff_t length,
unsigned flags, struct iomap *iomap)
{
@ -1173,20 +1158,43 @@ static int gfs2_iomap_begin(struct inode *inode, loff_t pos, loff_t length,
iomap->flags |= IOMAP_F_BUFFER_HEAD;
trace_gfs2_iomap_start(ip, pos, length, flags);
if ((flags & IOMAP_WRITE) && !(flags & IOMAP_DIRECT)) {
ret = gfs2_iomap_begin_write(inode, pos, length, flags, iomap, &mp);
} else {
ret = gfs2_iomap_get(inode, pos, length, flags, iomap, &mp);
/*
* Silently fall back to buffered I/O for stuffed files or if
* we've hot a hole (see gfs2_file_direct_write).
*/
if ((flags & IOMAP_WRITE) && (flags & IOMAP_DIRECT) &&
iomap->type != IOMAP_MAPPED)
ret = -ENOTBLK;
if (gfs2_iomap_need_write_lock(flags)) {
ret = gfs2_write_lock(inode);
if (ret)
goto out;
}
ret = gfs2_iomap_get(inode, pos, length, flags, iomap, &mp);
if (ret)
goto out_unlock;
switch(flags & (IOMAP_WRITE | IOMAP_ZERO)) {
case IOMAP_WRITE:
if (flags & IOMAP_DIRECT) {
/*
* Silently fall back to buffered I/O for stuffed files
* or if we've got a hole (see gfs2_file_direct_write).
*/
if (iomap->type != IOMAP_MAPPED)
ret = -ENOTBLK;
goto out_unlock;
}
break;
case IOMAP_ZERO:
if (iomap->type == IOMAP_HOLE)
goto out_unlock;
break;
default:
goto out_unlock;
}
ret = gfs2_iomap_begin_write(inode, pos, length, flags, iomap, &mp);
out_unlock:
if (ret && gfs2_iomap_need_write_lock(flags))
gfs2_write_unlock(inode);
release_metapath(&mp);
out:
trace_gfs2_iomap_end(ip, iomap, ret);
return ret;
}
@ -1197,8 +1205,18 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length,
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
if ((flags & (IOMAP_WRITE | IOMAP_DIRECT)) != IOMAP_WRITE)
goto out;
switch (flags & (IOMAP_WRITE | IOMAP_ZERO)) {
case IOMAP_WRITE:
if (flags & IOMAP_DIRECT)
return 0;
break;
case IOMAP_ZERO:
if (iomap->type == IOMAP_HOLE)
return 0;
break;
default:
return 0;
}
if (!gfs2_is_stuffed(ip))
gfs2_ordered_add_inode(ip);
@ -1231,8 +1249,8 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length,
set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
out_unlock:
gfs2_write_unlock(inode);
out:
if (gfs2_iomap_need_write_lock(flags))
gfs2_write_unlock(inode);
return 0;
}
@ -1330,76 +1348,10 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
return ret;
}
/**
* gfs2_block_zero_range - Deal with zeroing out data
*
* This is partly borrowed from ext3.
*/
static int gfs2_block_zero_range(struct inode *inode, loff_t from,
unsigned int length)
{
struct address_space *mapping = inode->i_mapping;
struct gfs2_inode *ip = GFS2_I(inode);
unsigned long index = from >> PAGE_SHIFT;
unsigned offset = from & (PAGE_SIZE-1);
unsigned blocksize, iblock, pos;
struct buffer_head *bh;
struct page *page;
int err;
page = find_or_create_page(mapping, index, GFP_NOFS);
if (!page)
return 0;
blocksize = inode->i_sb->s_blocksize;
iblock = index << (PAGE_SHIFT - inode->i_sb->s_blocksize_bits);
if (!page_has_buffers(page))
create_empty_buffers(page, blocksize, 0);
/* Find the buffer that contains "offset" */
bh = page_buffers(page);
pos = blocksize;
while (offset >= pos) {
bh = bh->b_this_page;
iblock++;
pos += blocksize;
}
err = 0;
if (!buffer_mapped(bh)) {
gfs2_block_map(inode, iblock, bh, 0);
/* unmapped? It's a hole - nothing to do */
if (!buffer_mapped(bh))
goto unlock;
}
/* Ok, it's mapped. Make sure it's up-to-date */
if (PageUptodate(page))
set_buffer_uptodate(bh);
if (!buffer_uptodate(bh)) {
err = -EIO;
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))
goto unlock;
err = 0;
}
if (gfs2_is_jdata(ip))
gfs2_trans_add_data(ip->i_gl, bh);
else
gfs2_ordered_add_inode(ip);
zero_user(page, offset, length);
mark_buffer_dirty(bh);
unlock:
unlock_page(page);
put_page(page);
return err;
return iomap_zero_range(inode, from, length, NULL, &gfs2_iomap_ops);
}
#define GFS2_JTRUNC_REVOKES 8192
@ -1680,6 +1632,7 @@ out_unlock:
brelse(dibh);
up_write(&ip->i_rw_mutex);
gfs2_trans_end(sdp);
buf_in_tr = false;
}
gfs2_glock_dq_uninit(rd_gh);
cond_resched();
@ -2187,7 +2140,7 @@ static int do_grow(struct inode *inode, u64 size)
if (error)
goto do_end_trans;
i_size_write(inode, size);
truncate_setsize(inode, size);
ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode);
gfs2_trans_add_meta(ip->i_gl, dibh);
gfs2_dinode_out(ip, dibh->b_data);

47
fs/gfs2/dentry.c
View File

@ -38,7 +38,7 @@ static int gfs2_drevalidate(struct dentry *dentry, unsigned int flags)
struct inode *inode;
struct gfs2_holder d_gh;
struct gfs2_inode *ip = NULL;
int error;
int error, valid = 0;
int had_lock = 0;
if (flags & LOOKUP_RCU)
@ -51,53 +51,30 @@ static int gfs2_drevalidate(struct dentry *dentry, unsigned int flags)
if (inode) {
if (is_bad_inode(inode))
goto invalid;
goto out;
ip = GFS2_I(inode);
}
if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
goto valid;
if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) {
valid = 1;
goto out;
}
had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL);
if (!had_lock) {
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
if (error)
goto fail;
}
error = gfs2_dir_check(d_inode(parent), &dentry->d_name, ip);
switch (error) {
case 0:
if (!inode)
goto invalid_gunlock;
break;
case -ENOENT:
if (!inode)
goto valid_gunlock;
goto invalid_gunlock;
default:
goto fail_gunlock;
goto out;
}
valid_gunlock:
error = gfs2_dir_check(d_inode(parent), &dentry->d_name, ip);
valid = inode ? !error : (error == -ENOENT);
if (!had_lock)
gfs2_glock_dq_uninit(&d_gh);
valid:
out:
dput(parent);
return 1;
invalid_gunlock:
if (!had_lock)
gfs2_glock_dq_uninit(&d_gh);
invalid:
dput(parent);
return 0;
fail_gunlock:
gfs2_glock_dq_uninit(&d_gh);
fail:
dput(parent);
return 0;
return valid;
}
static int gfs2_dhash(const struct dentry *dentry, struct qstr *str)

3
fs/gfs2/dir.c
View File

@ -1463,8 +1463,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, struct dir_context *ctx,
sort_offset : entries, copied);
out_free:
for(i = 0; i < leaf; i++)
if (larr[i])
brelse(larr[i]);
brelse(larr[i]);
kvfree(larr);
out:
return error;

3
fs/gfs2/dir.h
View File

@ -32,8 +32,7 @@ extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
const struct gfs2_inode *ip, struct gfs2_diradd *da);
static inline void gfs2_dir_no_add(struct gfs2_diradd *da)
{
if (da->bh)
brelse(da->bh);
brelse(da->bh);
da->bh = NULL;
}
extern int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry);

9
fs/gfs2/file.c
View File

@ -1049,7 +1049,7 @@ static long __gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t
rblocks += data_blocks ? data_blocks : 1;
error = gfs2_trans_begin(sdp, rblocks,
PAGE_SIZE/sdp->sd_sb.sb_bsize);
PAGE_SIZE >> inode->i_blkbits);
if (error)
goto out_trans_fail;
@ -1065,11 +1065,10 @@ static long __gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t
gfs2_quota_unlock(ip);
}
if (!(mode & FALLOC_FL_KEEP_SIZE) && (pos + count) > inode->i_size) {
if (!(mode & FALLOC_FL_KEEP_SIZE) && (pos + count) > inode->i_size)
i_size_write(inode, pos + count);
file_update_time(file);
mark_inode_dirty(inode);
}
file_update_time(file);
mark_inode_dirty(inode);
if ((file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host))
return vfs_fsync_range(file, pos, pos + count - 1,

115
fs/gfs2/glock.c
View File

@ -305,6 +305,11 @@ static void gfs2_holder_wake(struct gfs2_holder *gh)
clear_bit(HIF_WAIT, &gh->gh_iflags);
smp_mb__after_atomic();
wake_up_bit(&gh->gh_iflags, HIF_WAIT);
if (gh->gh_flags & GL_ASYNC) {
struct gfs2_sbd *sdp = gh->gh_gl->gl_name.ln_sbd;
wake_up(&sdp->sd_async_glock_wait);
}
}
/**
@ -931,6 +936,17 @@ void gfs2_holder_uninit(struct gfs2_holder *gh)
gh->gh_ip = 0;
}
static void gfs2_glock_update_hold_time(struct gfs2_glock *gl,
unsigned long start_time)
{
/* Have we waited longer that a second? */
if (time_after(jiffies, start_time + HZ)) {
/* Lengthen the minimum hold time. */
gl->gl_hold_time = min(gl->gl_hold_time + GL_GLOCK_HOLD_INCR,
GL_GLOCK_MAX_HOLD);
}
}
/**
* gfs2_glock_wait - wait on a glock acquisition
* @gh: the glock holder
@ -940,18 +956,99 @@ void gfs2_holder_uninit(struct gfs2_holder *gh)
int gfs2_glock_wait(struct gfs2_holder *gh)
{
unsigned long time1 = jiffies;
unsigned long start_time = jiffies;
might_sleep();
wait_on_bit(&gh->gh_iflags, HIF_WAIT, TASK_UNINTERRUPTIBLE);
if (time_after(jiffies, time1 + HZ)) /* have we waited > a second? */
/* Lengthen the minimum hold time. */
gh->gh_gl->gl_hold_time = min(gh->gh_gl->gl_hold_time +
GL_GLOCK_HOLD_INCR,
GL_GLOCK_MAX_HOLD);
gfs2_glock_update_hold_time(gh->gh_gl, start_time);
return gh->gh_error;
}
static int glocks_pending(unsigned int num_gh, struct gfs2_holder *ghs)
{
int i;
for (i = 0; i < num_gh; i++)
if (test_bit(HIF_WAIT, &ghs[i].gh_iflags))
return 1;
return 0;
}
/**
* gfs2_glock_async_wait - wait on multiple asynchronous glock acquisitions
* @num_gh: the number of holders in the array
* @ghs: the glock holder array
*
* Returns: 0 on success, meaning all glocks have been granted and are held.
* -ESTALE if the request timed out, meaning all glocks were released,
* and the caller should retry the operation.
*/
int gfs2_glock_async_wait(unsigned int num_gh, struct gfs2_holder *ghs)
{
struct gfs2_sbd *sdp = ghs[0].gh_gl->gl_name.ln_sbd;
int i, ret = 0, timeout = 0;
unsigned long start_time = jiffies;
bool keep_waiting;
might_sleep();
/*
* Total up the (minimum hold time * 2) of all glocks and use that to
* determine the max amount of time we should wait.
*/
for (i = 0; i < num_gh; i++)
timeout += ghs[i].gh_gl->gl_hold_time << 1;
wait_for_dlm:
if (!wait_event_timeout(sdp->sd_async_glock_wait,
!glocks_pending(num_gh, ghs), timeout))
ret = -ESTALE; /* request timed out. */
/*
* If dlm granted all our requests, we need to adjust the glock
* minimum hold time values according to how long we waited.
*
* If our request timed out, we need to repeatedly release any held
* glocks we acquired thus far to allow dlm to acquire the remaining
* glocks without deadlocking. We cannot currently cancel outstanding
* glock acquisitions.
*
* The HIF_WAIT bit tells us which requests still need a response from
* dlm.
*
* If dlm sent us any errors, we return the first error we find.
*/
keep_waiting = false;
for (i = 0; i < num_gh; i++) {
/* Skip holders we have already dequeued below. */
if (!gfs2_holder_queued(&ghs[i]))
continue;
/* Skip holders with a pending DLM response. */
if (test_bit(HIF_WAIT, &ghs[i].gh_iflags)) {
keep_waiting = true;
continue;
}
if (test_bit(HIF_HOLDER, &ghs[i].gh_iflags)) {
if (ret == -ESTALE)
gfs2_glock_dq(&ghs[i]);
else
gfs2_glock_update_hold_time(ghs[i].gh_gl,
start_time);
}
if (!ret)
ret = ghs[i].gh_error;
}
if (keep_waiting)
goto wait_for_dlm;
/*
* At this point, we've either acquired all locks or released them all.
*/
return ret;
}
/**
* handle_callback - process a demote request
* @gl: the glock
@ -1018,9 +1115,9 @@ __acquires(&gl->gl_lockref.lock)
struct gfs2_holder *gh2;
int try_futile = 0;
BUG_ON(gh->gh_owner_pid == NULL);
GLOCK_BUG_ON(gl, gh->gh_owner_pid == NULL);
if (test_and_set_bit(HIF_WAIT, &gh->gh_iflags))
BUG();
GLOCK_BUG_ON(gl, true);
if (gh->gh_flags & (LM_FLAG_TRY | LM_FLAG_TRY_1CB)) {
if (test_bit(GLF_LOCK, &gl->gl_flags))
@ -1788,8 +1885,8 @@ void gfs2_dump_glock(struct seq_file *seq, struct gfs2_glock *gl, bool fsid)
unsigned long long dtime;
const struct gfs2_holder *gh;
char gflags_buf[32];
char fs_id_buf[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
char fs_id_buf[sizeof(sdp->sd_fsname) + 7];
memset(fs_id_buf, 0, sizeof(fs_id_buf));
if (fsid && sdp) /* safety precaution */

6
fs/gfs2/glock.h
View File

@ -190,6 +190,7 @@ extern void gfs2_holder_uninit(struct gfs2_holder *gh);
extern int gfs2_glock_nq(struct gfs2_holder *gh);
extern int gfs2_glock_poll(struct gfs2_holder *gh);
extern int gfs2_glock_wait(struct gfs2_holder *gh);
extern int gfs2_glock_async_wait(unsigned int num_gh, struct gfs2_holder *ghs);
extern void gfs2_glock_dq(struct gfs2_holder *gh);
extern void gfs2_glock_dq_wait(struct gfs2_holder *gh);
extern void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
@ -260,6 +261,11 @@ static inline bool gfs2_holder_initialized(struct gfs2_holder *gh)
return gh->gh_gl;
}
static inline bool gfs2_holder_queued(struct gfs2_holder *gh)
{
return !list_empty(&gh->gh_list);
}
/**
* glock_set_object - set the gl_object field of a glock
* @gl: the glock

1
fs/gfs2/incore.h
View File

@ -725,6 +725,7 @@ struct gfs2_sbd {
struct gfs2_glock *sd_freeze_gl;
struct work_struct sd_freeze_work;
wait_queue_head_t sd_glock_wait;
wait_queue_head_t sd_async_glock_wait;
atomic_t sd_glock_disposal;
struct completion sd_locking_init;
struct completion sd_wdack;

63
fs/gfs2/inode.c
View File

@ -1348,7 +1348,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
struct gfs2_inode *ip = GFS2_I(d_inode(odentry));
struct gfs2_inode *nip = NULL;
struct gfs2_sbd *sdp = GFS2_SB(odir);
struct gfs2_holder ghs[5], r_gh;
struct gfs2_holder ghs[4], r_gh, rd_gh;
struct gfs2_rgrpd *nrgd;
unsigned int num_gh;
int dir_rename = 0;
@ -1357,6 +1357,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
int error;
gfs2_holder_mark_uninitialized(&r_gh);
gfs2_holder_mark_uninitialized(&rd_gh);
if (d_really_is_positive(ndentry)) {
nip = GFS2_I(d_inode(ndentry));
if (ip == nip)
@ -1387,24 +1388,19 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
}
num_gh = 1;
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs);
if (odip != ndip) {
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE,GL_ASYNC,
ghs + num_gh);
num_gh++;
}
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
if (nip) {
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC,
ghs + num_gh);
num_gh++;
/* grab the resource lock for unlink flag twiddling
* this is the case of the target file already existing
* so we unlink before doing the rename
*/
nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1);
if (nrgd)
gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
}
for (x = 0; x < num_gh; x++) {
@ -1412,6 +1408,25 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_gunlock;
}
error = gfs2_glock_async_wait(num_gh, ghs);
if (error)
goto out_gunlock;
if (nip) {
/* Grab the resource group glock for unlink flag twiddling.
* This is the case where the target dinode already exists
* so we unlink before doing the rename.
*/
nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1);
if (!nrgd) {
error = -ENOENT;
goto out_gunlock;
}
error = gfs2_glock_nq_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0,
&rd_gh);
if (error)
goto out_gunlock;
}
error = -ENOENT;
if (ip->i_inode.i_nlink == 0)
@ -1541,8 +1556,12 @@ out_gunlock_q:
gfs2_quota_unlock(ndip);
out_gunlock:
gfs2_dir_no_add(&da);
if (gfs2_holder_initialized(&rd_gh))
gfs2_glock_dq_uninit(&rd_gh);
while (x--) {
gfs2_glock_dq(ghs + x);
if (gfs2_holder_queued(ghs + x))
gfs2_glock_dq(ghs + x);
gfs2_holder_uninit(ghs + x);
}
out_gunlock_r:
@ -1572,7 +1591,7 @@ static int gfs2_exchange(struct inode *odir, struct dentry *odentry,
struct gfs2_inode *oip = GFS2_I(odentry->d_inode);
struct gfs2_inode *nip = GFS2_I(ndentry->d_inode);
struct gfs2_sbd *sdp = GFS2_SB(odir);
struct gfs2_holder ghs[5], r_gh;
struct gfs2_holder ghs[4], r_gh;
unsigned int num_gh;
unsigned int x;
umode_t old_mode = oip->i_inode.i_mode;
@ -1606,15 +1625,16 @@ static int gfs2_exchange(struct inode *odir, struct dentry *odentry,
}
num_gh = 1;
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs);
if (odip != ndip) {
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC,
ghs + num_gh);
num_gh++;
}
gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh);
num_gh++;
for (x = 0; x < num_gh; x++) {
@ -1623,6 +1643,10 @@ static int gfs2_exchange(struct inode *odir, struct dentry *odentry,
goto out_gunlock;
}
error = gfs2_glock_async_wait(num_gh, ghs);
if (error)
goto out_gunlock;
error = -ENOENT;
if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0)
goto out_gunlock;
@ -1683,7 +1707,8 @@ out_end_trans:
gfs2_trans_end(sdp);
out_gunlock:
while (x--) {
gfs2_glock_dq(ghs + x);
if (gfs2_holder_queued(ghs + x))
gfs2_glock_dq(ghs + x);
gfs2_holder_uninit(ghs + x);
}
out_gunlock_r:

8
fs/gfs2/lock_dlm.c
View File

@ -1035,12 +1035,12 @@ static int set_recover_size(struct gfs2_sbd *sdp, struct dlm_slot *slots,
}
old_size = ls->ls_recover_size;
if (old_size >= max_jid + 1)
new_size = old_size;
while (new_size < max_jid + 1)
new_size += RECOVER_SIZE_INC;
if (new_size == old_size)
return 0;
new_size = old_size + RECOVER_SIZE_INC;
submit = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
result = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
if (!submit || !result) {

1
fs/gfs2/ops_fstype.c
View File

@ -87,6 +87,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
gfs2_tune_init(&sdp->sd_tune);
init_waitqueue_head(&sdp->sd_glock_wait);
init_waitqueue_head(&sdp->sd_async_glock_wait);
atomic_set(&sdp->sd_glock_disposal, 0);
init_completion(&sdp->sd_locking_init);
init_completion(&sdp->sd_wdack);

2
fs/gfs2/quota.c
View File

@ -774,7 +774,7 @@ static int gfs2_write_disk_quota(struct gfs2_inode *ip, struct gfs2_quota *qp,
nbytes = sizeof(struct gfs2_quota);
pg_beg = loc >> PAGE_SHIFT;
pg_off = loc % PAGE_SIZE;
pg_off = offset_in_page(loc);
/* If the quota straddles a page boundary, split the write in two */
if ((pg_off + nbytes) > PAGE_SIZE) {

2
fs/gfs2/rgrp.c
View File

@ -2285,7 +2285,7 @@ void gfs2_rgrp_dump(struct seq_file *seq, struct gfs2_glock *gl,
static void gfs2_rgrp_error(struct gfs2_rgrpd *rgd)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
char fs_id_buf[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
char fs_id_buf[sizeof(sdp->sd_fsname) + 7];
fs_warn(sdp, "rgrp %llu has an error, marking it readonly until umount\n",
(unsigned long long)rgd->rd_addr);

14
fs/gfs2/super.c
View File

@ -1722,13 +1722,13 @@ static struct inode *gfs2_alloc_inode(struct super_block *sb)
struct gfs2_inode *ip;
ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL);
if (ip) {
ip->i_flags = 0;
ip->i_gl = NULL;
memset(&ip->i_res, 0, sizeof(ip->i_res));
RB_CLEAR_NODE(&ip->i_res.rs_node);
ip->i_rahead = 0;
}
if (!ip)
return NULL;
ip->i_flags = 0;
ip->i_gl = NULL;
memset(&ip->i_res, 0, sizeof(ip->i_res));
RB_CLEAR_NODE(&ip->i_res.rs_node);
ip->i_rahead = 0;
return &ip->i_inode;
}

2
fs/gfs2/util.c
View File

@ -178,7 +178,7 @@ int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
const char *function, char *file, unsigned int line)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
char fs_id_buf[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
char fs_id_buf[sizeof(sdp->sd_fsname) + 7];
int rv;
sprintf(fs_id_buf, "fsid=%s: ", sdp->sd_fsname);