From: Eric W. Biederman <ebiederm@xmission.com>
Date: Fri, 3 Apr 2015 01:33:53 +0000 (-0500)
Subject: mnt: Use hlist_move_list in namespace_unlock
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a3b3c5627c8301ac850962b04f645dfab81e6a60;p=linux-beck.git

mnt: Use hlist_move_list in namespace_unlock

Small cleanup to make the code more readable and maintainable.

Signed-off-by: Eric Biederman <ebiederm@xmission.com>
---

diff --git a/fs/namespace.c b/fs/namespace.c
index 82ef1405260e..e1ee57206eef 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1298,17 +1298,15 @@ static HLIST_HEAD(unmounted);	/* protected by namespace_sem */
 
 static void namespace_unlock(void)
 {
-	struct hlist_head head = unmounted;
+	struct hlist_head head;
 
-	if (likely(hlist_empty(&head))) {
-		up_write(&namespace_sem);
-		return;
-	}
+	hlist_move_list(&unmounted, &head);
 
-	head.first->pprev = &head.first;
-	INIT_HLIST_HEAD(&unmounted);
 	up_write(&namespace_sem);
 
+	if (likely(hlist_empty(&head)))
+		return;
+
 	synchronize_rcu();
 
 	group_pin_kill(&head);