From: J. R. Okajima <hooanon05@yahoo.co.jp>
Date: Wed, 23 Feb 2011 07:59:49 +0000 (+0900)
Subject: Unlock vfsmount_lock in do_umount
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bf9faa2aa30e2ebf30287536712ed2717bb47002;p=openwrt%2Fstaging%2Fblogic.git

Unlock vfsmount_lock in do_umount

By the commit
	b3e19d9 2011-01-07 fs: scale mntget/mntput
vfsmount_lock was introduced around testing mnt_count.
Fix the mis-typed 'unlock'

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/namespace.c b/fs/namespace.c
index 7b0b95371696..d1edf26025dc 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1244,7 +1244,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
 		 */
 		br_write_lock(vfsmount_lock);
 		if (mnt_get_count(mnt) != 2) {
-			br_write_lock(vfsmount_lock);
+			br_write_unlock(vfsmount_lock);
 			return -EBUSY;
 		}
 		br_write_unlock(vfsmount_lock);