[src/trunk]: src/sys/ufs/lfs Fix a deadlock

[maya <maya%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a5241bddce91
branches:  trunk
changeset: 346453:a5241bddce91
user:      maya <maya%NetBSD.org@localhost>
date:      Wed Jul 13 16:26:26 2016 +0000

description:
Fix a deadlock

ok dholland@

diffstat:

 sys/ufs/lfs/lfs_vnops.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r b546a4735b6a -r a5241bddce91 sys/ufs/lfs/lfs_vnops.c
--- a/sys/ufs/lfs/lfs_vnops.c   Wed Jul 13 15:59:54 2016 +0000
+++ b/sys/ufs/lfs/lfs_vnops.c   Wed Jul 13 16:26:26 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lfs_vnops.c,v 1.303 2016/06/20 03:55:34 dholland Exp $ */
+/*     $NetBSD: lfs_vnops.c,v 1.304 2016/07/13 16:26:26 maya Exp $     */
 
 /*-
  * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
@@ -125,7 +125,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.303 2016/06/20 03:55:34 dholland Exp $");
+__KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.304 2016/07/13 16:26:26 maya Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_compat_netbsd.h"
@@ -593,8 +593,10 @@
                if ((error = mtsleep(&lfs_dirvcount,
                    PCATCH | PUSER | PNORELOCK, "lfs_maxdirop", 0,
                    &lfs_lock)) != 0) {
+                       mutex_exit(&lfs_lock);
                        goto unreserve;
                }
+               mutex_exit(&lfs_lock);
                goto restart;
        }