linux-kernel - Re: [PATCH] memcg: simplify unreclaimable groups handling in soft limit reclaim

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Message-ID: <20141020185947.GB11973@phnom.home.cmpxchg.org>
Date:	Mon, 20 Oct 2014 14:59:47 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Vladimir Davydov <vdavydov@...allels.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memcg: simplify unreclaimable groups handling in soft
 limit reclaim

On Mon, Oct 20, 2014 at 07:55:54PM +0400, Vladimir Davydov wrote:
> If we fail to reclaim anything from a cgroup during a soft reclaim pass
> we want to get the next largest cgroup exceeding its soft limit. To
> achieve this, we should obviously remove the current group from the tree
> and then pick the largest group. Currently we have a weird loop instead.
> Let's simplify it.
> 
> Signed-off-by: Vladimir Davydov <vdavydov@...allels.com>

I wonder if there will be anything left once we removed all that which
is pointless and the unnecessary from the memcg code.

Acked-by: Johannes Weiner <hannes@...xchg.org>
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