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Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
-rw-r--r--fs/xfs/xfs_vnodeops.c32
1 files changed, 29 insertions, 3 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 58bfe629b93..e2bf2ef58b6 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -1118,6 +1118,7 @@ xfs_fsync(
xfs_inode_t *ip;
xfs_trans_t *tp;
int error;
+ int log_flushed = 0, changed = 1;
vn_trace_entry(BHV_TO_VNODE(bdp),
__FUNCTION__, (inst_t *)__return_address);
@@ -1171,10 +1172,18 @@ xfs_fsync(
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (xfs_ipincount(ip)) {
- xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
+ _xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
XFS_LOG_FORCE |
((flag & FSYNC_WAIT)
- ? XFS_LOG_SYNC : 0));
+ ? XFS_LOG_SYNC : 0),
+ &log_flushed);
+ } else {
+ /*
+ * If the inode is not pinned and nothing
+ * has changed we don't need to flush the
+ * cache.
+ */
+ changed = 0;
}
error = 0;
} else {
@@ -1210,10 +1219,27 @@ xfs_fsync(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
if (flag & FSYNC_WAIT)
xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0, NULL);
+ error = _xfs_trans_commit(tp, 0, NULL, &log_flushed);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
+
+ if ((ip->i_mount->m_flags & XFS_MOUNT_BARRIER) && changed) {
+ /*
+ * If the log write didn't issue an ordered tag we need
+ * to flush the disk cache for the data device now.
+ */
+ if (!log_flushed)
+ xfs_blkdev_issue_flush(ip->i_mount->m_ddev_targp);
+
+ /*
+ * If this inode is on the RT dev we need to flush that
+ * cache aswell.
+ */
+ if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
+ xfs_blkdev_issue_flush(ip->i_mount->m_rtdev_targp);
+ }
+
return error;
}