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authorChristoph Hellwig <hch@infradead.org>2011-09-19 14:55:51 +0000
committerAlex Elder <aelder@sgi.com>2011-10-11 21:15:08 -0500
commitb10370585349d364ff3c550afa7922e6e21f029d (patch)
tree23996ee7961fc5595d72c5e149a4250c444356f4
parent815cb21662b914e1e14c256a3d662b1352c8509e (diff)
xfs: unlock the inode before log force in xfs_fsync
Only read the LSN we need to push to with the ilock held, and then release it before we do the log force to improve concurrency. This also removes the only direct caller of _xfs_trans_commit, thus allowing it to be merged into the plain xfs_trans_commit again. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
-rw-r--r--fs/xfs/xfs_file.c15
-rw-r--r--fs/xfs/xfs_trans.c11
-rw-r--r--fs/xfs/xfs_trans.h5
3 files changed, 13 insertions, 18 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 558543c146b..d8ef02eb178 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -137,6 +137,7 @@ xfs_file_fsync(
struct xfs_trans *tp;
int error = 0;
int log_flushed = 0;
+ xfs_lsn_t lsn = 0;
trace_xfs_file_fsync(ip);
@@ -214,9 +215,9 @@ xfs_file_fsync(
*/
xfs_trans_ijoin(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- xfs_trans_set_sync(tp);
- error = _xfs_trans_commit(tp, 0, &log_flushed);
+ error = xfs_trans_commit(tp, 0);
+ lsn = ip->i_itemp->ili_last_lsn;
xfs_iunlock(ip, XFS_ILOCK_EXCL);
} else {
/*
@@ -227,14 +228,14 @@ xfs_file_fsync(
* disk yet, the inode will be still be pinned. If it is,
* force the log.
*/
- if (xfs_ipincount(ip)) {
- error = _xfs_log_force_lsn(mp,
- ip->i_itemp->ili_last_lsn,
- XFS_LOG_SYNC, &log_flushed);
- }
+ if (xfs_ipincount(ip))
+ lsn = ip->i_itemp->ili_last_lsn;
xfs_iunlock(ip, XFS_ILOCK_SHARED);
}
+ if (!error && lsn)
+ error = _xfs_log_force_lsn(mp, lsn, XFS_LOG_SYNC, &log_flushed);
+
/*
* If we only have a single device, and the log force about was
* a no-op we might have to flush the data device cache here.
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index efc147f0e9b..b64c8c79736 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -1790,9 +1790,7 @@ xfs_trans_commit_cil(
}
/*
- * xfs_trans_commit
- *
- * Commit the given transaction to the log a/synchronously.
+ * Commit the given transaction to the log.
*
* XFS disk error handling mechanism is not based on a typical
* transaction abort mechanism. Logically after the filesystem
@@ -1804,10 +1802,9 @@ xfs_trans_commit_cil(
* Do not reference the transaction structure after this call.
*/
int
-_xfs_trans_commit(
+xfs_trans_commit(
struct xfs_trans *tp,
- uint flags,
- int *log_flushed)
+ uint flags)
{
struct xfs_mount *mp = tp->t_mountp;
xfs_lsn_t commit_lsn = -1;
@@ -1866,7 +1863,7 @@ _xfs_trans_commit(
if (sync) {
if (!error) {
error = _xfs_log_force_lsn(mp, commit_lsn,
- XFS_LOG_SYNC, log_flushed);
+ XFS_LOG_SYNC, NULL);
}
XFS_STATS_INC(xs_trans_sync);
} else {
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 06a9759b635..54b0b1cc3e3 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -487,10 +487,7 @@ void xfs_trans_log_efd_extent(xfs_trans_t *,
struct xfs_efd_log_item *,
xfs_fsblock_t,
xfs_extlen_t);
-int _xfs_trans_commit(xfs_trans_t *,
- uint flags,
- int *);
-#define xfs_trans_commit(tp, flags) _xfs_trans_commit(tp, flags, NULL)
+int xfs_trans_commit(xfs_trans_t *, uint flags);
void xfs_trans_cancel(xfs_trans_t *, int);
int xfs_trans_ail_init(struct xfs_mount *);
void xfs_trans_ail_destroy(struct xfs_mount *);