From: Alan Cox <alan@linux.intel.com>
Date: Thu, 7 Feb 2013 01:27:57 +0000 (+1100)
Subject: fork: unshare: remove dead code
X-Git-Tag: next-20130218~1^2~171
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b98e0986cd55d034f3714578f8a260a188b6453f;p=karo-tx-linux.git

fork: unshare: remove dead code

If new_nsproxy is set we will always call switch_task_namespaces and then
set new_nsproxy back to NULL so the reassignment and fall through check
are redundant

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/kernel/fork.c b/kernel/fork.c
index 433c9c536c48..35fb37d69223 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1857,10 +1857,8 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
 			exit_sem(current);
 		}
 
-		if (new_nsproxy) {
+		if (new_nsproxy)
 			switch_task_namespaces(current, new_nsproxy);
-			new_nsproxy = NULL;
-		}
 
 		task_lock(current);
 
@@ -1890,9 +1888,6 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
 		}
 	}
 
-	if (new_nsproxy)
-		put_nsproxy(new_nsproxy);
-
 bad_unshare_cleanup_cred:
 	if (new_cred)
 		put_cred(new_cred);