Author: mav
Date: Wed Jun 11 12:56:49 2014
New Revision: 267362
URL: http://svnweb.freebsd.org/changeset/base/267362
Log:
Remove unneeded mountlist_mtx acquisition from sync_fsync().
All struct mount fields accessed by sync_fsync() are protected by MNT_MTX.
Modified:
head/sys/kern/vfs_subr.c
Modified: head/sys/kern/vfs_subr.c
==============================================================================
--- head/sys/kern/vfs_subr.c Wed Jun 11 11:27:44 2014 (r267361)
+++ head/sys/kern/vfs_subr.c Wed Jun 11 12:56:49 2014 (r267362)
@@ -3656,11 +3656,8 @@ sync_fsync(struct vop_fsync_args *ap)
* Walk the list of vnodes pushing all that are dirty and
* not already on the sync list.
*/
- mtx_lock(&mountlist_mtx);
- if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK) != 0) {
- mtx_unlock(&mountlist_mtx);
+ if (vfs_busy(mp, MBF_NOWAIT) != 0)
return (0);
- }
if (vn_start_write(NULL, &mp, V_NOWAIT) != 0) {
vfs_unbusy(mp);
return (0);
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