From 67e55205ec55cc7899f1d783f217961596798419 Mon Sep 17 00:00:00 2001
From: Alessio Igor Bogani <abogani@texware.it>
Date: Fri, 24 Apr 2009 09:06:53 +0200
Subject: vfs: umount_begin BKL pushdown

Push BKL down into ->umount_begin()

Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/cifs/cifsfs.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'fs/cifs')

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 0d6d8b573652..355e0efec0cf 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -35,6 +35,7 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/freezer.h>
+#include <linux/smp_lock.h>
 #include "cifsfs.h"
 #include "cifspdu.h"
 #define DECLARE_GLOBALS_HERE
@@ -530,6 +531,7 @@ static void cifs_umount_begin(struct super_block *sb)
 	if (tcon == NULL)
 		return;
 
+	lock_kernel();
 	read_lock(&cifs_tcp_ses_lock);
 	if (tcon->tc_count == 1)
 		tcon->tidStatus = CifsExiting;
@@ -548,6 +550,7 @@ static void cifs_umount_begin(struct super_block *sb)
 	}
 /* BB FIXME - finish add checks for tidStatus BB */
 
+	unlock_kernel();
 	return;
 }
 
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