From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933321Ab2CZSMX (ORCPT ); Mon, 26 Mar 2012 14:12:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33661 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933235Ab2CZSMV (ORCPT ); Mon, 26 Mar 2012 14:12:21 -0400 From: Andrea Arcangeli To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Hillf Danton , Dan Smith , Peter Zijlstra , Linus Torvalds , Andrew Morton , Thomas Gleixner , Ingo Molnar , Paul Turner , Suresh Siddha , Mike Galbraith , "Paul E. McKenney" , Lai Jiangshan , Bharata B Rao , Lee Schermerhorn , Rik van Riel , Johannes Weiner Subject: [PATCH 19/39] mm: add unlikely to the mm allocation failure check Date: Mon, 26 Mar 2012 19:46:06 +0200 Message-Id: <1332783986-24195-20-git-send-email-aarcange@redhat.com> In-Reply-To: <1332783986-24195-1-git-send-email-aarcange@redhat.com> References: <1332783986-24195-1-git-send-email-aarcange@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Very minor optimization to hint gcc. Signed-off-by: Andrea Arcangeli --- kernel/fork.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/fork.c b/kernel/fork.c index aefe24f..31b2f35 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -547,7 +547,7 @@ struct mm_struct *mm_alloc(void) struct mm_struct *mm; mm = allocate_mm(); - if (!mm) + if (unlikely(!mm)) return NULL; memset(mm, 0, sizeof(*mm));