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From: Vladimir Davydov <vdavydov@virtuozzo.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@techsingularity.net>,
	Hillf Danton <hillf.zj@alibaba-inc.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Vlastimil Babka <vbabka@suse.cz>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Minchan Kim <minchan@kernel.org>,
	"Rik van Riel" <riel@surriel.com>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: vmscan: fix memcg-aware shrinkers not called on global reclaim
Date: Mon, 1 Aug 2016 16:21:45 +0300	[thread overview]
Message-ID: <20160801132145.GA19395@esperanza> (raw)
In-Reply-To: <20160801131840.GE13544@dhcp22.suse.cz>

On Mon, Aug 01, 2016 at 03:18:40PM +0200, Michal Hocko wrote:
> On Mon 01-08-16 16:03:10, Vladimir Davydov wrote:
> > We must call shrink_slab() for each memory cgroup on both global and
> > memcg reclaim in shrink_node_memcg(). Commit d71df22b55099 accidentally
> > changed that so that now shrink_slab() is only called with memcg != NULL
> > on memcg reclaim. As a result, memcg-aware shrinkers (including
> > dentry/inode) are never invoked on global reclaim. Fix that.
> > 
> > Fixes: d71df22b55099 ("mm, vmscan: begin reclaiming pages on a per-node basis")
> 
> I guess you meant b2e18757f2c9. I do not see d71df22b55099 anywhere.

I'm basing on top of v4.7-mmotm-2016-07-28-16-33 and there it's
d71df22b55099.

> 
> > Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
> 
> The fix looks ok to me otherwise
> 
> Acked-by: Michal Hocko <mhocko@suse.com>

Thanks!

WARNING: multiple messages have this Message-ID (diff)
From: Vladimir Davydov <vdavydov@virtuozzo.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@techsingularity.net>,
	Hillf Danton <hillf.zj@alibaba-inc.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Vlastimil Babka <vbabka@suse.cz>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Minchan Kim <minchan@kernel.org>, Rik van Riel <riel@surriel.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: vmscan: fix memcg-aware shrinkers not called on global reclaim
Date: Mon, 1 Aug 2016 16:21:45 +0300	[thread overview]
Message-ID: <20160801132145.GA19395@esperanza> (raw)
In-Reply-To: <20160801131840.GE13544@dhcp22.suse.cz>

On Mon, Aug 01, 2016 at 03:18:40PM +0200, Michal Hocko wrote:
> On Mon 01-08-16 16:03:10, Vladimir Davydov wrote:
> > We must call shrink_slab() for each memory cgroup on both global and
> > memcg reclaim in shrink_node_memcg(). Commit d71df22b55099 accidentally
> > changed that so that now shrink_slab() is only called with memcg != NULL
> > on memcg reclaim. As a result, memcg-aware shrinkers (including
> > dentry/inode) are never invoked on global reclaim. Fix that.
> > 
> > Fixes: d71df22b55099 ("mm, vmscan: begin reclaiming pages on a per-node basis")
> 
> I guess you meant b2e18757f2c9. I do not see d71df22b55099 anywhere.

I'm basing on top of v4.7-mmotm-2016-07-28-16-33 and there it's
d71df22b55099.

> 
> > Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
> 
> The fix looks ok to me otherwise
> 
> Acked-by: Michal Hocko <mhocko@suse.com>

Thanks!

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  reply	other threads:[~2016-08-01 19:59 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-01 13:03 [PATCH] mm: vmscan: fix memcg-aware shrinkers not called on global reclaim Vladimir Davydov
2016-08-01 13:03 ` Vladimir Davydov
2016-08-01 13:18 ` Michal Hocko
2016-08-01 13:18   ` Michal Hocko
2016-08-01 13:21   ` Vladimir Davydov [this message]
2016-08-01 13:21     ` Vladimir Davydov
2016-08-01 13:27     ` Michal Hocko
2016-08-01 13:27       ` Michal Hocko
2016-08-01 15:15 ` Johannes Weiner
2016-08-01 15:15   ` Johannes Weiner
2016-08-02  0:11 ` Minchan Kim
2016-08-02  0:11   ` Minchan Kim
2016-08-02  9:32 ` Mel Gorman
2016-08-02  9:32   ` Mel Gorman

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