Module Name: src
Committed By: hannken
Date: Thu Mar 30 09:13:37 UTC 2017
Modified Files:
src/sys/kern: vfs_vnops.c
Log Message:
Lock the vnode before changing its writecount.
To generate a diff of this commit:
cvs rdiff -u -r1.194 -r1.195 src/sys/kern/vfs_vnops.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/kern/vfs_vnops.c
diff -u src/sys/kern/vfs_vnops.c:1.194 src/sys/kern/vfs_vnops.c:1.195
--- src/sys/kern/vfs_vnops.c:1.194 Wed Mar 1 10:43:37 2017
+++ src/sys/kern/vfs_vnops.c Thu Mar 30 09:13:37 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_vnops.c,v 1.194 2017/03/01 10:43:37 hannken Exp $ */
+/* $NetBSD: vfs_vnops.c,v 1.195 2017/03/30 09:13:37 hannken Exp $ */
/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnops.c,v 1.194 2017/03/01 10:43:37 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnops.c,v 1.195 2017/03/30 09:13:37 hannken Exp $");
#include "veriexec.h"
@@ -376,13 +376,13 @@ vn_close(struct vnode *vp, int flags, ka
{
int error;
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
if (flags & FWRITE) {
mutex_enter(vp->v_interlock);
KASSERT(vp->v_writecount > 0);
vp->v_writecount--;
mutex_exit(vp->v_interlock);
}
- vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_CLOSE(vp, flags, cred);
vput(vp);
return (error);
