Author: mjg
Date: Mon Oct 20 17:53:49 2014
New Revision: 273335
URL: https://svnweb.freebsd.org/changeset/base/273335
Log:
unionfs: hold mount interlock while manipulating mnt_flag
This is for consistency with other filesystems.
Modified:
head/sys/fs/unionfs/union_vfsops.c
Modified: head/sys/fs/unionfs/union_vfsops.c
==============================================================================
--- head/sys/fs/unionfs/union_vfsops.c Mon Oct 20 17:04:03 2014
(r273334)
+++ head/sys/fs/unionfs/union_vfsops.c Mon Oct 20 17:53:49 2014
(r273335)
@@ -290,12 +290,14 @@ unionfs_domount(struct mount *mp)
return (error);
}
+ MNT_ILOCK(mp);
/*
* Check mnt_flag
*/
if ((ump->um_lowervp->v_mount->mnt_flag & MNT_LOCAL) &&
(ump->um_uppervp->v_mount->mnt_flag & MNT_LOCAL))
mp->mnt_flag |= MNT_LOCAL;
+ MNT_IUNLOCK(mp);
/*
* Get new fsid
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