linux-kernel - Re: [PATCH -mm 1/4] memcg, slab: do not schedule cache destruction when last page goes away

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Message-ID: <alpine.DEB.2.10.1404151016400.11231@gentwo.org>
Date:	Tue, 15 Apr 2014 10:17:04 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Vladimir Davydov <vdavydov@...allels.com>
cc:	Johannes Weiner <hannes@...xchg.org>, akpm@...ux-foundation.org,
	mhocko@...e.cz, glommer@...il.com, penberg@...nel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, devel@...nvz.org
Subject: Re: [PATCH -mm 1/4] memcg, slab: do not schedule cache destruction
 when last page goes away

On Tue, 15 Apr 2014, Vladimir Davydov wrote:

> 2) When freeing an object of a dead memcg cache, initiate thorough check
> if the cache is really empty and destroy it then. That could be
> implemented by poking the reaping thread on kfree, and actually does not
> require the schedule_work in memcg_release_pages IMO.

There is already logic in both slub and slab that does that on cache
close.

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