Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753342AbZLNMdH (ORCPT ); Mon, 14 Dec 2009 07:33:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751328AbZLNMdF (ORCPT ); Mon, 14 Dec 2009 07:33:05 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:44908 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751027AbZLNMdB (ORCPT ); Mon, 14 Dec 2009 07:33:01 -0500 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 From: KOSAKI Motohiro To: Rik van Riel Subject: [PATCH 8/8] mm: Give up allocation if the task have fatal signal Cc: kosaki.motohiro@jp.fujitsu.com, lwoodman@redhat.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, minchan.kim@gmail.com In-Reply-To: <20091214210823.BBAE.A69D9226@jp.fujitsu.com> References: <20091211164651.036f5340@annuminas.surriel.com> <20091214210823.BBAE.A69D9226@jp.fujitsu.com> Message-Id: <20091214213224.BBC6.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50.07 [ja] Date: Mon, 14 Dec 2009 21:32:58 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1148 Lines: 38 In OOM case, almost processes may be in vmscan. There isn't any reason the killed process continue allocation. process exiting free lots pages rather than greedy vmscan. Signed-off-by: KOSAKI Motohiro --- mm/page_alloc.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ca9cae1..8a9cbaa 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1878,6 +1878,14 @@ rebalance: goto got_pg; /* + * If the allocation is for userland page and we have fatal signal, + * there isn't any reason to continue allocation. instead, the task + * should exit soon. + */ + if (fatal_signal_pending(current) && (gfp_mask & __GFP_HIGHMEM)) + goto nopage; + + /* * If we failed to make any progress reclaiming, then we are * running out of options and have to consider going OOM */ -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/