From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 17 Sep 2013 01:19:20 +0000 (-0400)
Subject: put_mnt_ns(): use drop_collected_mounts()
X-Git-Tag: next-20130919~50^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a21e5f8a923367b776f8f74c45751217142319d2;p=karo-tx-linux.git

put_mnt_ns(): use drop_collected_mounts()

... rather than open-coding it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/namespace.c b/fs/namespace.c
index da5c49483430..5918fc31a636 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2802,11 +2802,7 @@ void put_mnt_ns(struct mnt_namespace *ns)
 {
 	if (!atomic_dec_and_test(&ns->count))
 		return;
-	namespace_lock();
-	br_write_lock(&vfsmount_lock);
-	umount_tree(ns->root, 0);
-	br_write_unlock(&vfsmount_lock);
-	namespace_unlock();
+	drop_collected_mounts(&ns->root->mnt);
 	free_mnt_ns(ns);
 }