Author: kib
Date: Wed Sep 9 10:51:50 2009
New Revision: 197030
URL: http://svn.freebsd.org/changeset/base/197030
Log:
In vfs_mark_atime(9), be resistent against reclaimed vnodes.
Assert that neccessary locks are taken, since vop might not be called.
Tested by: pho
MFC after: 3 days
Modified:
head/sys/kern/vfs_subr.c
Modified: head/sys/kern/vfs_subr.c
==============================================================================
--- head/sys/kern/vfs_subr.c Wed Sep 9 10:31:20 2009 (r197029)
+++ head/sys/kern/vfs_subr.c Wed Sep 9 10:51:50 2009 (r197030)
@@ -4269,8 +4269,12 @@ vfs_read_dirent(struct vop_readdir_args
void
vfs_mark_atime(struct vnode *vp, struct ucred *cred)
{
+ struct mount *mp;
- if ((vp->v_mount->mnt_flag & (MNT_NOATIME | MNT_RDONLY)) == 0)
+ mp = vp->v_mount;
+ VFS_ASSERT_GIANT(mp);
+ ASSERT_VOP_LOCKED(vp, "vfs_mark_atime");
+ if (mp != NULL && (mp->mnt_flag & (MNT_NOATIME | MNT_RDONLY)) == 0)
(void)VOP_MARKATIME(vp);
}
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