CVS commit: src/sys/kern

[Mindaugas Rasiukevicius]

Module Name:    src
Committed By:   rmind
Date:           Thu Jan 26 19:18:25 UTC 2012

Modified Files:
        src/sys/kern: vfs_bio.c

Log Message:
sysctl_dobuf: re-acquire the sysctl lock on retry path.  PR/45827.


To generate a diff of this commit:
cvs rdiff -u -r1.232 -r1.233 src/sys/kern/vfs_bio.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_bio.c
diff -u src/sys/kern/vfs_bio.c:1.232 src/sys/kern/vfs_bio.c:1.233
--- src/sys/kern/vfs_bio.c:1.232	Wed Oct  5 01:53:03 2011
+++ src/sys/kern/vfs_bio.c	Thu Jan 26 19:18:25 2012
@@ -1,4 +1,4 @@
-/*	$NetBSD: vfs_bio.c,v 1.232 2011/10/05 01:53:03 jakllsch Exp $	*/
+/*	$NetBSD: vfs_bio.c,v 1.233 2012/01/26 19:18:25 rmind Exp $	*/
 
 /*-
  * Copyright (c) 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -123,7 +123,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.232 2011/10/05 01:53:03 jakllsch Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.233 2012/01/26 19:18:25 rmind Exp $");
 
 #include "opt_bufcache.h"
 
@@ -1705,6 +1705,7 @@ sysctl_dobuf(SYSCTLFN_ARGS)
 						break;
 					}
 					mutex_exit(&bufcache_lock);
+					sysctl_relock();
 					goto retry;
 				}
 				dp += elem_size;