Module Name: src
Committed By: hannken
Date: Fri May 30 08:40:09 UTC 2014
Modified Files:
src/sys/ufs/ffs: ffs_snapshot.c
Log Message:
Testing "v_usecount == 1" for exclusive reference will not always
work -- remove and test only readonly.
To generate a diff of this commit:
cvs rdiff -u -r1.134 -r1.135 src/sys/ufs/ffs/ffs_snapshot.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/ufs/ffs/ffs_snapshot.c
diff -u src/sys/ufs/ffs/ffs_snapshot.c:1.134 src/sys/ufs/ffs/ffs_snapshot.c:1.135
--- src/sys/ufs/ffs/ffs_snapshot.c:1.134 Sat May 24 16:34:04 2014
+++ src/sys/ufs/ffs/ffs_snapshot.c Fri May 30 08:40:09 2014
@@ -1,4 +1,4 @@
-/* $NetBSD: ffs_snapshot.c,v 1.134 2014/05/24 16:34:04 christos Exp $ */
+/* $NetBSD: ffs_snapshot.c,v 1.135 2014/05/30 08:40:09 hannken Exp $ */
/*
* Copyright 2000 Marshall Kirk McKusick. All Rights Reserved.
@@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ffs_snapshot.c,v 1.134 2014/05/24 16:34:04 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ffs_snapshot.c,v 1.135 2014/05/30 08:40:09 hannken Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ffs.h"
@@ -423,11 +423,11 @@ snapshot_setup(struct mount *mp, struct
struct inode *ip = VTOI(vp);
/*
- * Check mount, exclusive reference and owner.
+ * Check mount, readonly reference and owner.
*/
if (vp->v_mount != mp)
return EXDEV;
- if (vp->v_usecount != 1 || vp->v_writecount != 0)
+ if (vp->v_writecount != 0)
return EBUSY;
error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_SNAPSHOT,
0, mp, vp, NULL);
