From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Wed, 17 Oct 2007 06:27:23 +0000 (-0700)
Subject: exec: consolidate 2 fast-paths
X-Git-Tag: v2.6.24-rc1~673
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=356d6d5058c8082b9e811838ab2fa27825c947e4;p=platform%2Fkernel%2Flinux-3.10.git

exec: consolidate 2 fast-paths

Now that we don't pre-allocate the new ->sighand, we can kill the first fast
path, it doesn't make sense any longer. At best, it can save one "list_empty()"
check but leads to the code duplication.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/exec.c b/fs/exec.c
index c6e91c3..ab5a4a3 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -752,15 +752,6 @@ static int de_thread(struct task_struct *tsk)
 	struct task_struct *leader = NULL;
 	int count;
 
-	/*
-	 * If we don't share sighandlers, then we aren't sharing anything
-	 * and we can just re-use it all.
-	 */
-	if (atomic_read(&oldsighand->count) <= 1) {
-		exit_itimers(sig);
-		return 0;
-	}
-
 	if (thread_group_empty(tsk))
 		goto no_thread_group;