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xfs: call xfs_buf_delwri_queue directly 

Unify the ways we add buffers to the delwri queue by always calling
xfs_buf_delwri_queue directly.  The xfs_bdwrite functions is removed and
opencoded in its callers, and the two places setting XBF_DELWRI while a
buffer is locked and expecting xfs_buf_unlock to pick it up are converted
to call xfs_buf_delwri_queue directly, too.  Also replace the
XFS_BUF_UNDELAYWRITE macro with direct calls to xfs_buf_delwri_dequeue
to make the explicit queuing/dequeuing more obvious.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2011-08-23 08:28:06 +00:00 committed by Alex Elder
parent 5a8ee6bafd
commit 61551f1ee5
12 changed files with 30 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/xfs/xfs_attr.c
View File

@ -2189,7 +2189,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK);
if (bp) {
XFS_BUF_STALE(bp);
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
xfs_buf_relse(bp);
bp = NULL;
}

21
fs/xfs/xfs_buf.c
View File

@ -43,7 +43,6 @@
static kmem_zone_t *xfs_buf_zone;
STATIC int xfsbufd(void *);
STATIC void xfs_buf_delwri_queue(xfs_buf_t *);
static struct workqueue_struct *xfslogd_workqueue;
struct workqueue_struct *xfsdatad_workqueue;
@ -937,9 +936,6 @@ void
xfs_buf_unlock(
struct xfs_buf *bp)
{
if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI)
xfs_buf_delwri_queue(bp);
XB_CLEAR_OWNER(bp);
up(&bp->b_sema);
@ -1036,17 +1032,6 @@ xfs_bwrite(
return error;
}
void
xfs_bdwrite(
void *mp,
struct xfs_buf *bp)
{
trace_xfs_buf_bdwrite(bp, _RET_IP_);
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
}
/*
* Called when we want to stop a buffer from getting written or read.
* We attach the EIO error, muck with its flags, and call xfs_buf_ioend
@ -1069,7 +1054,7 @@ xfs_bioerror(
* We're calling xfs_buf_ioend, so delete XBF_DONE flag.
*/
XFS_BUF_UNREAD(bp);
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
XFS_BUF_UNDONE(bp);
XFS_BUF_STALE(bp);
@ -1098,7 +1083,7 @@ xfs_bioerror_relse(
* change that interface.
*/
XFS_BUF_UNREAD(bp);
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
XFS_BUF_DONE(bp);
XFS_BUF_STALE(bp);
bp->b_iodone = NULL;
@ -1555,7 +1540,7 @@ error:
/*
* Delayed write buffer handling
*/
STATIC void
void
xfs_buf_delwri_queue(
xfs_buf_t *bp)
{

8
fs/xfs/xfs_buf.h
View File

@ -198,7 +198,6 @@ extern void xfs_buf_unlock(xfs_buf_t *);
/* Buffer Read and Write Routines */
extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp);
extern void xfs_bdwrite(void *mp, xfs_buf_t *bp);
extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
extern int xfs_bdstrat_cb(struct xfs_buf *);
@ -221,8 +220,9 @@ static inline int xfs_buf_geterror(xfs_buf_t *bp)
extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t);
/* Delayed Write Buffer Routines */
extern void xfs_buf_delwri_dequeue(xfs_buf_t *);
extern void xfs_buf_delwri_promote(xfs_buf_t *);
extern void xfs_buf_delwri_queue(struct xfs_buf *);
extern void xfs_buf_delwri_dequeue(struct xfs_buf *);
extern void xfs_buf_delwri_promote(struct xfs_buf *);
/* Buffer Daemon Setup Routines */
extern int xfs_buf_init(void);
@ -251,8 +251,6 @@ void xfs_buf_stale(struct xfs_buf *bp);
XFS_BUF_DONE(bp); \
} while (0)
#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI)
#define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp)
#define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI)
#define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE)

4
fs/xfs/xfs_buf_item.c
View File

@ -992,7 +992,7 @@ xfs_buf_iodone_callbacks(
xfs_buf_ioerror(bp, 0); /* errno of 0 unsets the flag */
if (!XFS_BUF_ISSTALE(bp)) {
XFS_BUF_DELAYWRITE(bp);
xfs_buf_delwri_queue(bp);
XFS_BUF_DONE(bp);
}
ASSERT(bp->b_iodone != NULL);
@ -1007,7 +1007,7 @@ xfs_buf_iodone_callbacks(
*/
XFS_BUF_STALE(bp);
XFS_BUF_DONE(bp);
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
trace_xfs_buf_error_relse(bp, _RET_IP_);

6
fs/xfs/xfs_dquot.c
View File

@ -1243,8 +1243,10 @@ xfs_qm_dqflush(
if (flags & SYNC_WAIT)
error = xfs_bwrite(mp, bp);
else
xfs_bdwrite(mp, bp);
else {
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
}
trace_xfs_dqflush_done(dqp);

6
fs/xfs/xfs_inode.c
View File

@ -2598,8 +2598,10 @@ xfs_iflush(
if (flags & SYNC_WAIT)
error = xfs_bwrite(mp, bp);
else
xfs_bdwrite(mp, bp);
else {
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
}
return error;
corrupt_out:

9
fs/xfs/xfs_log_recover.c
View File

@ -2176,7 +2176,8 @@ xlog_recover_buffer_pass2(
} else {
ASSERT(bp->b_target->bt_mount == mp);
bp->b_iodone = xlog_recover_iodone;
xfs_bdwrite(mp, bp);
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
}
return (error);
@ -2439,7 +2440,8 @@ xlog_recover_inode_pass2(
write_inode_buffer:
ASSERT(bp->b_target->bt_mount == mp);
bp->b_iodone = xlog_recover_iodone;
xfs_bdwrite(mp, bp);
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
error:
if (need_free)
kmem_free(in_f);
@ -2561,7 +2563,8 @@ xlog_recover_dquot_pass2(
ASSERT(dq_f->qlf_size == 2);
ASSERT(bp->b_target->bt_mount == mp);
bp->b_iodone = xlog_recover_iodone;
xfs_bdwrite(mp, bp);
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
return (0);
}

2
fs/xfs/xfs_mount.c
View File

@ -1612,7 +1612,7 @@ xfs_unmountfs_writesb(xfs_mount_t *mp)
XFS_BUF_UNDONE(sbp);
XFS_BUF_UNREAD(sbp);
XFS_BUF_UNDELAYWRITE(sbp);
xfs_buf_delwri_dequeue(sbp);
XFS_BUF_WRITE(sbp);
XFS_BUF_UNASYNC(sbp);
ASSERT(sbp->b_target == mp->m_ddev_targp);

3
fs/xfs/xfs_qm.c
View File

@ -1296,7 +1296,8 @@ xfs_qm_dqiter_bufs(
break;
xfs_qm_reset_dqcounts(mp, bp, firstid, type);
xfs_bdwrite(mp, bp);
xfs_buf_delwri_queue(bp);
xfs_buf_relse(bp);
/*
* goto the next block.
*/

2
fs/xfs/xfs_rw.c
View File

@ -149,7 +149,7 @@ xfs_read_buf(
}
if (bp) {
XFS_BUF_UNDONE(bp);
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
XFS_BUF_STALE(bp);
/*
* brelse clears B_ERROR and b_error

1
fs/xfs/xfs_trace.h
View File

@ -320,7 +320,6 @@ DEFINE_BUF_EVENT(xfs_buf_rele);
DEFINE_BUF_EVENT(xfs_buf_iodone);
DEFINE_BUF_EVENT(xfs_buf_iorequest);
DEFINE_BUF_EVENT(xfs_buf_bawrite);
DEFINE_BUF_EVENT(xfs_buf_bdwrite);
DEFINE_BUF_EVENT(xfs_buf_lock);
DEFINE_BUF_EVENT(xfs_buf_lock_done);
DEFINE_BUF_EVENT(xfs_buf_trylock);

5
fs/xfs/xfs_trans_buf.c
View File

@ -643,13 +643,14 @@ xfs_trans_log_buf(xfs_trans_t *tp,
* inside the b_bdstrat callback so that this won't get written to
* disk.
*/
XFS_BUF_DELAYWRITE(bp);
XFS_BUF_DONE(bp);
ASSERT(atomic_read(&bip->bli_refcount) > 0);
bp->b_iodone = xfs_buf_iodone_callbacks;
bip->bli_item.li_cb = xfs_buf_iodone;
xfs_buf_delwri_queue(bp);
trace_xfs_trans_log_buf(bip);
/*
@ -738,7 +739,7 @@ xfs_trans_binval(
* We set the stale bit in the buffer as well since we're getting
* rid of it.
*/
XFS_BUF_UNDELAYWRITE(bp);
xfs_buf_delwri_dequeue(bp);
XFS_BUF_STALE(bp);
bip->bli_flags |= XFS_BLI_STALE;
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);