linux-kernel - Re: [PATCH] mm: memcontrol: fix possible css ref leak on oom

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Message-ID: <20160524113124.GF8259@dhcp22.suse.cz>
Date:	Tue, 24 May 2016 13:31:25 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	Vladimir Davydov <vdavydov@...tuozzo.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: memcontrol: fix possible css ref leak on oom

On Tue 24-05-16 13:05:23, Vladimir Davydov wrote:
> On Tue, May 24, 2016 at 11:22:02AM +0200, Michal Hocko wrote:
[...]
> > you think about the following? I will cook up a full patch if this
> > (untested) looks ok.
> 
> It won't work for most filesystems as they define custom ->readpages. I
> wonder if it'd be OK to patch them all not to trigger oom.

readpages is mostly a wrapper for mpage_readpages so I guess this
wouldn't be a big deal.
-- 
Michal Hocko
SUSE Labs