linux-kernel - [PATCH 1/7] vfs: Fix shrink

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Message-ID: <m1ej1p2l6u.fsf@frodo.ebiederm.org>
Date:	Thu, 06 Nov 2008 02:38:49 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	<linux-kernel@...r.kernel.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Al Viro <viro@...IV.linux.org.uk>,
	Linux Containers <containers@...ts.osdl.org>
Subject: [PATCH 1/7] vfs: Fix shrink_submounts


In the last refactoring of shrink_submounts a variable was
not completely renamed.  So finish the renaming of mnt to m
now.

Without this if you attempt to mount an nfs mount that has
both automatic nfs sub mounts on it, and has normal mounts
on it.  The unmount will succeed when it should not.

Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
 fs/namespace.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index cce4670..65b3dc8 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1815,8 +1815,8 @@ static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts)
 		while (!list_empty(&graveyard)) {
 			m = list_first_entry(&graveyard, struct vfsmount,
 						mnt_expire);
-			touch_mnt_namespace(mnt->mnt_ns);
-			umount_tree(mnt, 1, umounts);
+			touch_mnt_namespace(m->mnt_ns);
+			umount_tree(m, 1, umounts);
 		}
 	}
 }
-- 
1.5.3.rc6.17.g1911

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