From: Rik van Riel <riel@redhat.com>
To: Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org,
Vladimir Davydov <vdavydov@parallels.com>,
stable@vger.kernel.org, Mel Gorman <mgorman@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@suse.cz>
Subject: Re: [PATCH V3 1/2] mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed
Date: Mon, 05 Jan 2015 21:45:32 -0500 [thread overview]
Message-ID: <54AB4C4C.5030004@redhat.com> (raw)
In-Reply-To: <1420448203-30212-1-git-send-email-vbabka@suse.cz>
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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 <vbabka@suse.cz> Signed-off-by:
> Vladimir Davydov <vdavydov@parallels.com> Cc:
> <stable@vger.kernel.org> # v3.6+ Cc: Mel Gorman
> <mgorman@suse.de> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc:
> Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
- --
All rights reversed
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prev parent reply other threads:[~2015-01-06 2:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-05 8:56 [PATCH V3 1/2] mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed Vlastimil Babka
2015-01-05 8:56 ` [PATCH V3 2/2] mm, vmscan: wake up all pfmemalloc-throttled processes at once Vlastimil Babka
2015-01-06 2:58 ` Rik van Riel
2015-01-05 9:12 ` [PATCH V3 1/2] mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed Michal Hocko
2015-01-06 2:45 ` Rik van Riel [this message]
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