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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 /fs/xfs/xfs_file.c
parent815cb21662b914e1e14c256a3d662b1352c8509e (diff)
downloadop-kernel-dev-b10370585349d364ff3c550afa7922e6e21f029d.zip
op-kernel-dev-b10370585349d364ff3c550afa7922e6e21f029d.tar.gz
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>
Diffstat (limited to 'fs/xfs/xfs_file.c')
-rw-r--r--fs/xfs/xfs_file.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 558543c..d8ef02e 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.
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