linux-kernel - Re: [patch] mm: memcontrol: switch soft limit default back to infinity

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Message-ID: <20141229084259.GA9984@esperanza>
Date:	Mon, 29 Dec 2014 11:42:59 +0300
From:	Vladimir Davydov <vdavydov@...allels.com>
To:	Johannes Weiner <hannes@...xchg.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>, Tejun Heo <tj@...nel.org>,
	<linux-mm@...ck.org>, <cgroups@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [patch] mm: memcontrol: switch soft limit default back to
 infinity

On Sun, Dec 28, 2014 at 01:47:48PM -0500, Johannes Weiner wrote:
> 3e32cb2e0a12 ("mm: memcontrol: lockless page counters") accidentally
> switched the soft limit default from infinity to zero, which turns all
> memcgs with even a single page into soft limit excessors and engages
> soft limit reclaim on all of them during global memory pressure.  This
> makes global reclaim generally more aggressive, but also inverts the
> meaning of existing soft limit configurations where unset soft limits
> are usually more generous than set ones.
> 
> Signed-off-by: Johannes Weiner <hannes@...xchg.org>

Overlooked that :-/

Acked-by: Vladimir Davydov <vdavydov@...allels.com>
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