From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeelb@google.com>,
Seth Jennings <sjenning@redhat.com>,
Dan Streetman <ddstreet@ieee.org>, Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm/zswap: fix potential deadlock in zswap_frontswap_store()
Date: Mon, 3 Apr 2017 16:46:52 +0300 [thread overview]
Message-ID: <8f29ec95-50a8-c776-30dc-e79e6b0d7349@virtuozzo.com> (raw)
In-Reply-To: <28e47653-96d7-288a-0c9b-e065b29d7c45@suse.cz>
On 04/03/2017 04:28 PM, Vlastimil Babka wrote:
>>
>>
>> Seems it was broken by
>>
>> a8161d1ed6098506303c65b3701dedba876df42a
>> Author: Vlastimil Babka <vbabka@suse.cz>
>> Date: Thu Jul 28 15:49:19 2016 -0700
>>
>> mm, page_alloc: restructure direct compaction handling in slowpath
>
> Yeah, looks like previously the code subtly relied on compaction being
> called only after the PF_MEMALLOC -> goto nopage check and I didn't
> notice it. Tell me if I should add a check or you plan to send a patch.
> Thanks!
I would be glad if you could take care of this.
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next prev parent reply other threads:[~2017-04-03 13:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-31 15:30 Andrey Ryabinin
2017-03-31 17:00 ` Shakeel Butt
2017-04-03 8:47 ` Michal Hocko
2017-04-03 11:57 ` Andrey Ryabinin
2017-04-03 12:29 ` Michal Hocko
2017-04-03 12:37 ` Andrey Ryabinin
2017-04-03 12:38 ` Andrey Ryabinin
2017-04-03 13:28 ` Vlastimil Babka
2017-04-03 13:46 ` Andrey Ryabinin [this message]
2017-04-03 12:45 ` Michal Hocko
2017-04-03 13:14 ` Andrey Ryabinin
2017-04-03 13:23 ` Michal Hocko
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