From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 564CE6B0101 for ; Tue, 28 Jun 2011 19:23:22 -0400 (EDT) Received: by mail-qw0-f41.google.com with SMTP id 26so511738qwa.14 for ; Tue, 28 Jun 2011 16:23:21 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1308926697-22475-4-git-send-email-mgorman@suse.de> References: <1308926697-22475-1-git-send-email-mgorman@suse.de> <1308926697-22475-4-git-send-email-mgorman@suse.de> Date: Wed, 29 Jun 2011 08:23:20 +0900 Message-ID: Subject: Re: [PATCH 3/4] mm: vmscan: Evaluate the watermarks against the correct classzone From: Minchan Kim Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , =?UTF-8?Q?P=C3=A1draig_Brady?= , James Bottomley , Colin King , Andrew Lutomirski , Rik van Riel , Johannes Weiner , linux-mm , linux-kernel On Fri, Jun 24, 2011 at 11:44 PM, Mel Gorman wrote: > When deciding if kswapd is sleeping prematurely, the classzone is > taken into account but this is different to what balance_pgdat() and > the allocator are doing. Specifically, the DMA zone will be checked > based on the classzone used when waking kswapd which could be for a > GFP_KERNEL or GFP_HIGHMEM request. The lowmem reserve limit kicks in, > the watermark is not met and kswapd thinks its sleeping prematurely > keeping kswapd awake in error. > > Reported-and-tested-by: P=C3=A1draig Brady > Signed-off-by: Mel Gorman Reviewed-by: Minchan Kim --=20 Kind regards, Minchan Kim -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org