linux-kernel - Re: [PATCH -mm v2 2/3] slub: fix kmem_cache

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Message-ID: <alpine.DEB.2.11.1501281032220.32147@gentwo.org>
Date:	Wed, 28 Jan 2015 10:33:50 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Vladimir Davydov <vdavydov@...allels.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm v2 2/3] slub: fix kmem_cache_shrink return value

On Wed, 28 Jan 2015, Vladimir Davydov wrote:

> @@ -3419,6 +3420,9 @@ int __kmem_cache_shrink(struct kmem_cache *s)
>  		for (i = SHRINK_PROMOTE_MAX - 1; i >= 0; i--)
>  			list_splice_init(promote + i, &n->partial);
>
> +		if (n->nr_partial || slabs_node(s, node))

The total number of slabs obtained via slabs_node always contains the
number of partial ones. So no need to check n->nr_partial.

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