From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f171.google.com (mail-wi0-f171.google.com [209.85.212.171]) by kanga.kvack.org (Postfix) with ESMTP id E39236B0253 for ; Thu, 27 Aug 2015 17:35:35 -0400 (EDT) Received: by widdq5 with SMTP id dq5so4363865wid.0 for ; Thu, 27 Aug 2015 14:35:35 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id p4si1088180wiz.86.2015.08.27.14.35.33 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 27 Aug 2015 14:35:34 -0700 (PDT) Subject: Re: [PATCH] mm, migrate: count pages failing all retries in vmstat and tracepoint References: <1440685227-747-1-git-send-email-vbabka@suse.cz> From: Vlastimil Babka Message-ID: <55DF82AC.8010907@suse.cz> Date: Thu, 27 Aug 2015 23:35:40 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Naoya Horiguchi , "Kirill A. Shutemov" , "Aneesh Kumar K.V" , Konstantin Khlebnikov On 27.8.2015 23:02, David Rientjes wrote: > On Thu, 27 Aug 2015, Vlastimil Babka wrote: > >> Migration tries up to 10 times to migrate pages that return -EAGAIN until it >> gives up. If some pages fail all retries, they are counted towards the number >> of failed pages that migrate_pages() returns. They should also be counted in >> the /proc/vmstat pgmigrate_fail and in the mm_migrate_pages tracepoint. >> >> Signed-off-by: Vlastimil Babka > > Acked-by: David Rientjes Thanks. > I assume nothing else other than stats and tracepoints are affected by > this and this isn't a critical bugfix :) Yep, no stable needed :) -- 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