From: Michal Hocko <mhocko@kernel.org>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: hch@lst.de, mgorman@suse.de, viro@ZenIV.linux.org.uk,
linux-mm@kvack.org, hannes@cmpxchg.org,
linux-kernel@vger.kernel.org, peterz@infradead.org
Subject: Re: [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone
Date: Mon, 6 Feb 2017 11:34:25 +0100 [thread overview]
Message-ID: <20170206103424.GC3097@dhcp22.suse.cz> (raw)
In-Reply-To: <201702051943.CFB35412.OOSJVtLFOFQHMF@I-love.SAKURA.ne.jp>
On Sun 05-02-17 19:43:07, Tetsuo Handa wrote:
[...]
> Below one is also a loop. Maybe we can add __GFP_NOMEMALLOC to GFP_NOWAIT ?
No, GFP_NOWAIT is just too generic to use this flag.
> [ 257.781715] Out of memory: Kill process 5171 (a.out) score 842 or sacrifice child
> [ 257.784726] Killed process 5171 (a.out) total-vm:2177096kB, anon-rss:1476488kB, file-rss:4kB, shmem-rss:0kB
> [ 257.787691] a.out(5171): TIF_MEMDIE allocation: order=0 mode=0x1000200(GFP_NOWAIT|__GFP_NOWARN)
> [ 257.789789] CPU: 3 PID: 5171 Comm: a.out Not tainted 4.10.0-rc6-next-20170202+ #500
> [ 257.791784] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
> [ 257.794700] Call Trace:
> [ 257.795690] dump_stack+0x85/0xc9
> [ 257.797224] __alloc_pages_slowpath+0xacb/0xe36
> [ 257.798612] __alloc_pages_nodemask+0x382/0x3d0
> [ 257.799942] alloc_pages_current+0x97/0x1b0
> [ 257.801236] __get_free_pages+0x14/0x50
> [ 257.802546] __tlb_remove_page_size+0x70/0xd0
This is bound to MAX_GATHER_BATCH_COUNT which shouldn't be a lot of
pages (20 or so). We could add __GFP_NOMEMALLOC into tlb_next_batch
but I am not entirely convinced it is really necessary.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-02-06 10:34 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-18 13:44 [RFC PATCH 0/2] fix unbounded too_many_isolated Michal Hocko
2017-01-18 13:44 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone Michal Hocko
2017-01-18 14:46 ` Mel Gorman
2017-01-18 15:15 ` Michal Hocko
2017-01-18 15:54 ` Mel Gorman
2017-01-18 16:17 ` Michal Hocko
2017-01-18 17:00 ` Mel Gorman
2017-01-18 17:29 ` Michal Hocko
2017-01-19 10:07 ` Mel Gorman
2017-01-19 11:23 ` Michal Hocko
2017-01-19 13:11 ` Mel Gorman
2017-01-20 13:27 ` Tetsuo Handa
2017-01-21 7:42 ` Tetsuo Handa
2017-01-25 10:15 ` Michal Hocko
2017-01-25 10:19 ` Christoph Hellwig
2017-01-25 10:46 ` Michal Hocko
2017-01-25 11:09 ` Tetsuo Handa
2017-01-25 13:00 ` Michal Hocko
2017-01-27 14:49 ` Michal Hocko
2017-01-28 15:27 ` Tetsuo Handa
2017-01-30 8:55 ` Michal Hocko
2017-02-02 10:14 ` Michal Hocko
2017-02-03 10:57 ` Tetsuo Handa
2017-02-03 14:41 ` Michal Hocko
2017-02-03 14:50 ` Michal Hocko
2017-02-03 17:24 ` Brian Foster
2017-02-06 6:29 ` Tetsuo Handa
2017-02-06 14:35 ` Brian Foster
2017-02-06 14:42 ` Michal Hocko
2017-02-06 15:47 ` Brian Foster
2017-02-07 10:30 ` Tetsuo Handa
2017-02-07 16:54 ` Brian Foster
2017-02-03 14:55 ` Michal Hocko
2017-02-05 10:43 ` Tetsuo Handa
2017-02-06 10:34 ` Michal Hocko [this message]
2017-02-06 10:39 ` Michal Hocko
2017-02-07 21:12 ` Michal Hocko
2017-02-08 9:24 ` Peter Zijlstra
2017-02-21 9:40 ` Michal Hocko
2017-02-21 14:35 ` Tetsuo Handa
2017-02-21 15:53 ` Michal Hocko
2017-02-22 2:02 ` Tetsuo Handa
2017-02-22 7:54 ` Michal Hocko
2017-02-26 6:30 ` Tetsuo Handa
2017-01-31 11:58 ` Michal Hocko
2017-01-31 12:51 ` Christoph Hellwig
2017-01-31 13:21 ` Michal Hocko
2017-01-25 10:33 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pagesper zone Tetsuo Handa
2017-01-25 12:34 ` Michal Hocko
2017-01-25 13:13 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone Tetsuo Handa
2017-01-25 9:53 ` Michal Hocko
2017-01-20 6:42 ` Hillf Danton
2017-01-20 9:25 ` Mel Gorman
2017-01-18 13:44 ` [RFC PATCH 2/2] mm, vmscan: do not loop on too_many_isolated for ever Michal Hocko
2017-01-18 14:50 ` Mel Gorman
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