From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f48.google.com (mail-pa0-f48.google.com [209.85.220.48]) by kanga.kvack.org (Postfix) with ESMTP id 843A86B0253 for ; Thu, 27 Aug 2015 17:02:55 -0400 (EDT) Received: by pacdd16 with SMTP id dd16so37399943pac.2 for ; Thu, 27 Aug 2015 14:02:55 -0700 (PDT) Received: from mail-pa0-x235.google.com (mail-pa0-x235.google.com. [2607:f8b0:400e:c03::235]) by mx.google.com with ESMTPS id rf7si5848441pdb.172.2015.08.27.14.02.54 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Aug 2015 14:02:54 -0700 (PDT) Received: by pacgr6 with SMTP id gr6so668707pac.3 for ; Thu, 27 Aug 2015 14:02:53 -0700 (PDT) Date: Thu, 27 Aug 2015 14:02:52 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH] mm, migrate: count pages failing all retries in vmstat and tracepoint In-Reply-To: <1440685227-747-1-git-send-email-vbabka@suse.cz> Message-ID: References: <1440685227-747-1-git-send-email-vbabka@suse.cz> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Vlastimil Babka Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Naoya Horiguchi , "Kirill A. Shutemov" , "Aneesh Kumar K.V" , Konstantin Khlebnikov 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 I assume nothing else other than stats and tracepoints are affected by this and this isn't a critical bugfix :) -- 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