From: Minchan Kim <minchan@kernel.org>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
Huang Ying <ying.huang@intel.com>,
Mel Gorman <mgorman@techsingularity.net>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Shakeel Butt <shakeelb@google.com>,
Greg Thelen <gthelen@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm,vmscan: Kill global shrinker lock.
Date: Fri, 24 Nov 2017 08:46:26 +0900 [thread overview]
Message-ID: <20171123234626.GA19756@bbox> (raw)
In-Reply-To: <20171116174422.GC26475@cmpxchg.org>
On Thu, Nov 16, 2017 at 12:44:22PM -0500, Johannes Weiner wrote:
> On Wed, Nov 15, 2017 at 09:56:02AM +0900, Minchan Kim wrote:
> > @@ -498,6 +498,14 @@ static unsigned long shrink_slab(gfp_t gfp_mask, int nid,
> > sc.nid = 0;
> >
> > freed += do_shrink_slab(&sc, shrinker, nr_scanned, nr_eligible);
> > + /*
> > + * bail out if someone want to register a new shrinker to prevent
> > + * long time stall by parallel ongoing shrinking.
> > + */
> > + if (rwsem_is_contended(&shrinker_rwsem)) {
> > + freed = 1;
> > + break;
> > + }
> > }
>
> When you send the formal version, please include
>
> Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Thanks for the review, Johannes.
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next prev parent reply other threads:[~2017-11-23 23:46 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-13 21:37 [PATCH 1/2] mm,vmscan: Kill global shrinker lock Tetsuo Handa
2017-11-13 21:37 ` [PATCH 2/2] mm,vmscan: Allow parallel registration/unregistration of shrinkers Tetsuo Handa
2017-11-13 22:05 ` [PATCH 1/2] mm,vmscan: Kill global shrinker lock Shakeel Butt
2017-11-15 0:56 ` Minchan Kim
2017-11-15 6:28 ` Shakeel Butt
2017-11-16 0:46 ` Minchan Kim
2017-11-16 1:41 ` Shakeel Butt
2017-11-16 4:50 ` Minchan Kim
2017-11-15 8:56 ` Michal Hocko
2017-11-15 9:18 ` Michal Hocko
2017-11-16 17:44 ` Johannes Weiner
2017-11-23 23:46 ` Minchan Kim [this message]
2017-11-15 9:02 ` Michal Hocko
2017-11-15 10:58 ` Tetsuo Handa
2017-11-15 11:51 ` Michal Hocko
2017-11-16 0:56 ` Minchan Kim
2017-11-15 13:28 ` Johannes Weiner
2017-11-16 10:56 ` Tetsuo Handa
2017-11-15 14:00 ` Johannes Weiner
2017-11-15 14:11 ` Michal Hocko
2018-01-25 2:04 ` Tetsuo Handa
2018-01-25 8:36 ` Michal Hocko
2018-01-25 10:56 ` Tetsuo Handa
2018-01-25 11:41 ` Michal Hocko
2018-01-25 22:19 ` Eric Wheeler
2018-01-26 3:12 ` Tetsuo Handa
2018-01-26 10:08 ` Michal Hocko
2017-11-17 17:35 ` Christoph Hellwig
2017-11-17 17:41 ` Shakeel Butt
2017-11-17 17:53 ` Shakeel Butt
2017-11-17 18:36 ` Christoph Hellwig
2017-11-20 9:25 ` Michal Hocko
2017-11-20 9:33 ` Christoph Hellwig
2017-11-20 9:42 ` Michal Hocko
2017-11-20 10:41 ` Christoph Hellwig
2017-11-20 10:56 ` Tetsuo Handa
2017-11-20 18:28 ` Paul E. McKenney
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