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Message-ID: <20160127184701.GA31360@cmpxchg.org>
Date: Wed, 27 Jan 2016 13:47:01 -0500
From: Johannes Weiner <hannes@...xchg.org>
To: Vladimir Davydov <vdavydov@...tuozzo.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Michal Hocko <mhocko@...nel.org>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vmpressure: Fix subtree pressure detection
On Wed, Jan 27, 2016 at 07:28:57PM +0300, Vladimir Davydov wrote:
> When vmpressure is called for the entire subtree under pressure we
> mistakenly use vmpressure->scanned instead of vmpressure->tree_scanned
> when checking if vmpressure work is to be scheduled. This results in
> suppressing all vmpressure events in the legacy cgroup hierarchy. Fix
> it.
>
> Fixes: 8e8ae645249b ("mm: memcontrol: hook up vmpressure to socket pressure")
> Signed-off-by: Vladimir Davydov <vdavydov@...tuozzo.com>
Acked-by: Johannes Weiner <hannes@...xchg.org>
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