From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f42.google.com (mail-wg0-f42.google.com [74.125.82.42]) by kanga.kvack.org (Postfix) with ESMTP id 7602B6B00A1 for ; Mon, 5 Jan 2015 21:45:47 -0500 (EST) Received: by mail-wg0-f42.google.com with SMTP id k14so28598259wgh.1 for ; Mon, 05 Jan 2015 18:45:47 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id v4si117554911wjx.164.2015.01.05.18.45.46 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 05 Jan 2015 18:45:46 -0800 (PST) Message-ID: <54AB4C4C.5030004@redhat.com> Date: Mon, 05 Jan 2015 21:45:32 -0500 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH V3 1/2] mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed References: <1420448203-30212-1-git-send-email-vbabka@suse.cz> In-Reply-To: <1420448203-30212-1-git-send-email-vbabka@suse.cz> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Vlastimil Babka , Andrew Morton , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Vladimir Davydov , stable@vger.kernel.org, Mel Gorman , Johannes Weiner , Michal Hocko -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 01/05/2015 03:56 AM, Vlastimil Babka wrote: > Charles Shirron and Paul Cassella from Cray Inc have reported > kswapd stuck in a busy loop with nothing left to balance, but > kswapd_try_to_sleep() failing to sleep. Their analysis found the > cause to be a combination of several factors: > Fixes: 5515061d22f0 ("mm: throttle direct reclaimers if PF_MEMALLOC > reserves are low and swap is backed by network storage") > Signed-off-by: Vlastimil Babka Signed-off-by: > Vladimir Davydov Cc: > # v3.6+ Cc: Mel Gorman > Cc: Johannes Weiner Cc: > Michal Hocko Cc: Rik van Riel Acked-by: Rik van Riel - -- All rights reversed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUq0xLAAoJEM553pKExN6D8ZgH/3AjsMKmA/JytTf5WOjpO0+W ozN7ttYjYfIAFytYymPYkbm5/8pLBhy9HM9szMijRa+vhLyiGr5CSB0jTTU+1ImP BynATfT4NbAHssosMRCHqRep/NmGkaV0qkiL4ndEaCwiGz/x481jgvHXP3GdHxbu kIt8gYrP1gK3yM+yGk06nhsM9QU0C0P/ngzAvMTrch/nKr679Uu+chyLAskms7hZ +x0OZkkN1gWGDCn55swLPURbIPnWedml+HB19e30fehLtpCcPoTzc1Zr46fPcI4O BhJJX8QCWhpYdXqE1TZCid3zV4wPTJKAe1MskzBCgo3ELYE7ll1gM24QcfrpdgA= =0cv0 -----END PGP SIGNATURE----- -- 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