linux-kernel - Re: [PATCH v2] mm/slab: Improve performance of gathering slabinfo stats

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Message-ID: <alpine.DEB.2.20.1608161052080.7887@east.gentwo.org>
Date:	Tue, 16 Aug 2016 10:52:32 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	Aruna Ramakrishna <aruna.ramakrishna@...cle.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mike Kravetz <mike.kravetz@...cle.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] mm/slab: Improve performance of gathering slabinfo
 stats


On Tue, 16 Aug 2016, Joonsoo Kim wrote:

> In SLUB, nr_slabs is manipulated without holding a lock so atomic
> operation should be used.

It could be moved under the node lock.