From: Alan Cox <alan@linux.intel.com>
Date: Thu, 28 Feb 2013 01:03:23 +0000 (-0800)
Subject: fork: unshare: remove dead code
X-Git-Tag: firefly_0821_release~3680^2~999^2~128
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=6f977e6b2f75fdaccfd9be82bbf72fe5c60e8807;p=firefly-linux-kernel-4.4.55.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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/fork.c b/kernel/fork.c
index 8f62b2a0f120..8d932b1c9056 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1861,10 +1861,8 @@ 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);
 
@@ -1894,9 +1892,6 @@ 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);