linux-kernel - Re: [PATCH] slab: avoid unnecessary touching of a partial slab

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Message-ID: <alpine.DEB.2.00.1108260841570.5818@router.home>
Date:	Fri, 26 Aug 2011 09:08:17 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Zhao Jin <cronozhj@...il.com>
cc:	penberg@...nel.org, mpm@...enic.com, trivial@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] slab: avoid unnecessary touching of a partial slab

On Fri, 26 Aug 2011, Zhao Jin wrote:

> In cache_alloc_refill(), after refilling from a partial slab, if the
> slab remains partial, it would be deleted from and then added again to
> the partial list. As the slab is the first element in the list before
> deletion, such behavior has no effect. This patch avoids touching the
> slab in this case.

The list_del/list_add action is a list_move.
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