From: Michal Hocko <mhocko@kernel.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Linux PM list <linux-pm@vger.kernel.org>,
Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@suse.de>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Tejun Heo <tj@kernel.org>
Subject: Re: Re: "mm: move pcp and lru-pcp draining into single wq" broke resume from s2ram
Date: Wed, 19 Apr 2017 09:10:39 +0200 [thread overview]
Message-ID: <20170419071039.GB28263@dhcp22.suse.cz> (raw)
In-Reply-To: <201704190541.v3J5fUE3054131@www262.sakura.ne.jp>
On Wed 19-04-17 14:41:30, Tetsuo Handa wrote:
[...]
> Somebody is waiting forever with cpu_hotplug.lock held?
Why would that matter for drain_all_pages? It doesn't use
get_online_cpus since a459eeb7b852 ("mm, page_alloc: do not depend on
cpu hotplug locks inside the allocator") while ce612879ddc7 ("mm: move
pcp and lru-pcp draining into single wq") was merged later.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-04-19 7:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-18 19:56 Geert Uytterhoeven
2017-04-18 20:19 ` Michal Hocko
2017-04-19 5:41 ` Tetsuo Handa
2017-04-19 7:10 ` Michal Hocko [this message]
2017-04-19 7:26 ` Tetsuo Handa
2017-04-19 7:57 ` Michal Hocko
2017-04-19 8:09 ` Geert Uytterhoeven
2017-04-19 8:17 ` Michal Hocko
2017-04-19 22:50 ` Linus Torvalds
2017-04-20 6:53 ` Michal Hocko
2017-04-19 7:16 ` Geert Uytterhoeven
2017-04-19 7:45 ` Michal Hocko
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