From: Tejun Heo <tj@kernel.org>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled
Date: Mon, 31 Aug 2015 10:39:39 -0400 [thread overview]
Message-ID: <20150831143939.GC2271@mtj.duckdns.org> (raw)
In-Reply-To: <20150831143007.GA13814@esperanza>
On Mon, Aug 31, 2015 at 05:30:08PM +0300, Vladimir Davydov wrote:
> slab/slub can issue alloc_pages() any time with any flags they want and
> it won't be accounted to memcg, because kmem is accounted at slab/slub
> layer, not in buddy.
Hmmm? I meant the eventual calling into try_charge w/ GFP_NOWAIT.
Speculative usage of GFP_NOWAIT is bound to increase and we don't want
to put on extra restrictions from memcg side. For memory.high,
punting to the return path is a pretty stright-forward solution which
should make the problem go away almost entirely.
Thanks.
--
tejun
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next prev parent reply other threads:[~2015-08-31 14:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-30 19:02 Vladimir Davydov
2015-08-30 19:02 ` [PATCH 1/2] mm/slab: skip memcg reclaim only if in atomic context Vladimir Davydov
2015-08-30 19:02 ` [PATCH 2/2] mm/slub: do not bypass memcg reclaim for high-order page allocation Vladimir Davydov
2015-08-31 13:24 ` [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled Michal Hocko
2015-08-31 13:43 ` Tejun Heo
2015-08-31 14:30 ` Vladimir Davydov
2015-08-31 14:39 ` Tejun Heo [this message]
2015-08-31 15:18 ` Vladimir Davydov
2015-08-31 15:47 ` Tejun Heo
2015-08-31 16:51 ` Vladimir Davydov
2015-08-31 17:03 ` Tejun Heo
2015-08-31 19:26 ` Vladimir Davydov
2015-08-31 20:22 ` Christoph Lameter
2015-09-01 9:25 ` Vladimir Davydov
2015-08-31 14:20 ` Vladimir Davydov
2015-08-31 14:46 ` Tejun Heo
2015-08-31 15:24 ` Vladimir Davydov
2015-09-01 12:36 ` Michal Hocko
2015-09-01 13:40 ` Vladimir Davydov
2015-09-01 15:01 ` Michal Hocko
2015-09-01 16:55 ` Vladimir Davydov
2015-09-01 18:38 ` Michal Hocko
2015-09-02 9:30 ` Vladimir Davydov
2015-09-02 18:16 ` Christoph Lameter
2015-09-03 9:36 ` Vladimir Davydov
2015-09-03 16:32 ` Tejun Heo
2015-09-04 11:15 ` Vladimir Davydov
2015-09-04 15:44 ` Tejun Heo
2015-09-04 18:21 ` Vladimir Davydov
2015-09-04 19:30 ` Tejun Heo
2015-09-04 14:38 ` Michal Hocko
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