From: Tejun Heo <htejun@gmail.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
cl@linux.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
torvalds@linux-foundation.org, rientjes@google.com,
oleg@redhat.com, kwalker@redhat.com, akpm@linux-foundation.org,
hannes@cmpxchg.org, vdavydov@parallels.com, skozina@redhat.com,
mgorman@suse.de, riel@redhat.com
Subject: Re: [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks
Date: Tue, 27 Oct 2015 19:55:06 +0900 [thread overview]
Message-ID: <20151027105506.GB18741@mtj.duckdns.org> (raw)
In-Reply-To: <20151027092231.GC9891@dhcp22.suse.cz>
On Tue, Oct 27, 2015 at 10:22:31AM +0100, Michal Hocko wrote:
...
> stable kernels without causing any other regressions. 2) is the way
> to move forward for next kernels and we should really think whether
> WQ_MEM_RECLAIM should imply also WQ_HIGHPRI by default. If there is a
> general consensus that there are legitimate WQ_MEM_RECLAIM users which
> can do without the other flag then I am perfectly OK to use it for
> vmstat and oom sysrq dedicated workqueues.
I don't think flagging these things is a good approach. These are too
easy to miss. If this is a problem which needs to be solved, which
I'm not convined it is at this point, the right thing to do would be
doing stall detection and kicking the next work item automatically.
Thanks.
--
tejun
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next prev parent reply other threads:[~2015-10-27 10:55 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-21 12:26 [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks Tetsuo Handa
2015-10-21 13:03 ` Michal Hocko
2015-10-21 14:22 ` Christoph Lameter
2015-10-21 14:33 ` Michal Hocko
2015-10-21 14:49 ` Christoph Lameter
2015-10-21 14:55 ` Michal Hocko
2015-10-21 15:39 ` Tetsuo Handa
2015-10-21 17:16 ` Christoph Lameter
2015-10-22 11:37 ` Tetsuo Handa
2015-10-22 13:39 ` Christoph Lameter
2015-10-22 14:09 ` Tejun Heo
2015-10-22 14:21 ` Tejun Heo
2015-10-22 14:23 ` Christoph Lameter
2015-10-22 14:24 ` Tejun Heo
2015-10-22 14:25 ` Christoph Lameter
2015-10-22 14:33 ` Tejun Heo
2015-10-22 14:41 ` Christoph Lameter
2015-10-22 15:14 ` Tejun Heo
2015-10-23 4:26 ` Tejun Heo
2015-11-02 15:01 ` Michal Hocko
2015-11-02 19:20 ` Tejun Heo
2015-11-03 2:32 ` Tetsuo Handa
2015-11-03 19:43 ` Tejun Heo
2015-11-05 14:59 ` Tetsuo Handa
2015-11-05 17:45 ` Christoph Lameter
2015-11-06 0:16 ` Tejun Heo
2015-11-11 15:44 ` Michal Hocko
2015-11-11 16:03 ` Michal Hocko
2015-10-22 14:22 ` Christoph Lameter
2015-10-22 15:06 ` Michal Hocko
2015-10-22 15:15 ` Tejun Heo
2015-10-22 15:33 ` Christoph Lameter
2015-10-23 8:37 ` Michal Hocko
2015-10-23 11:43 ` Make vmstat deferrable again (was Re: [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks) Christoph Lameter
2015-10-23 12:07 ` Sergey Senozhatsky
2015-10-23 14:12 ` Christoph Lameter
2015-10-23 14:49 ` Sergey Senozhatsky
2015-10-23 16:10 ` Christoph Lameter
2015-10-22 15:35 ` [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks Michal Hocko
2015-10-22 15:37 ` Tejun Heo
2015-10-22 15:49 ` Michal Hocko
2015-10-22 18:42 ` Tejun Heo
2015-10-22 21:42 ` [PATCH] mm,vmscan: Use accurate values for zone_reclaimable()checks Tetsuo Handa
2015-10-22 22:47 ` Tejun Heo
2015-10-23 8:36 ` Michal Hocko
2015-10-23 10:37 ` Tejun Heo
2015-10-23 8:33 ` [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks Michal Hocko
2015-10-23 10:36 ` Tejun Heo
2015-10-23 11:11 ` Michal Hocko
2015-10-23 12:25 ` Tetsuo Handa
2015-10-23 18:23 ` Tejun Heo
2015-10-25 10:52 ` Tetsuo Handa
2015-10-25 22:47 ` Tejun Heo
2015-10-27 9:22 ` Michal Hocko
2015-10-27 10:55 ` Tejun Heo [this message]
2015-10-27 12:07 ` Michal Hocko
2015-10-23 18:21 ` Tejun Heo
2015-10-27 9:16 ` Michal Hocko
2015-10-27 10:52 ` Tejun Heo
2015-10-27 11:07 ` [PATCH] mm,vmscan: Use accurate values for zone_reclaimable()checks Tetsuo Handa
2015-10-27 11:30 ` Tejun Heo
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