From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 97C226B0044 for ; Tue, 27 Oct 2009 09:40:43 -0400 (EDT) From: Mel Gorman Subject: [PATCH 0/3] Reduce GFP_ATOMIC allocation failures, partial fix V3 Date: Tue, 27 Oct 2009 13:40:30 +0000 Message-Id: <1256650833-15516-1-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Andrew Morton , stable@kernel.org Cc: linux-kernel@vger.kernel.org, "linux-mm@kvack.org\"" , Frans Pop , Jiri Kosina , Sven Geggus , Karol Lewandowski , Tobias Oetiker , KOSAKI Motohiro , Pekka Enberg , Rik van Riel , Christoph Lameter , Stephan von Krawczynski , "Rafael J. Wysocki" , Kernel Testers List , Mel Gorman List-ID: Since 2.6.31-rc1, there have been an increasing number of GFP_ATOMIC failures. A significant number of these have been high-order GFP_ATOMIC failures and while they are generally brushed away, there has been a large increase in them recently and there are a number of possible areas the problem could be in - core vm, page writeback and a specific driver. The bugs affected by this that I am aware of are; [Bug #14141] order 2 page allocation failures in iwlagn [Bug #14141] order 2 page allocation failures (generic) [Bug #14265] ifconfig: page allocation failure. order:5, mode:0x8020 w/ e100 [No BZ ID] Kernel crash on 2.6.31.x (kcryptd: page allocation failure..) [No BZ ID] page allocation failure message kernel 2.6.31.4 (tty-related) The three patches in this series partially address the problem. I am proposing these for merging to mainline and -stable now to reduce the number of duplicate bug reports. The following bug should be fixed by these patches. [No BZ ID] page allocation failure message kernel 2.6.31.4 (tty-related) The following bug becomes very difficult to reproduce with these patches; [Bug #14265] ifconfig: page allocation failure. order:5, mode:0x8020 w/ e100 The rest of the bugs remain open. If these patches are agreed upon, they should be also considered -stable candidates. Patch 1 does not apply cleanly but I can supply a version that does. mm/page_alloc.c | 4 ++-- mm/vmscan.c | 9 +++++++++ 2 files changed, 11 insertions(+), 2 deletions(-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org