linux-kernel - Re: [patch 2/2]slub: add a type for slab partial list position

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Message-ID: <alpine.DEB.2.00.1108231023470.21267@router.home>
Date:	Tue, 23 Aug 2011 10:25:12 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Shaohua Li <shaohua.li@...el.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm <linux-mm@...ck.org>,
	lkml <linux-kernel@...r.kernel.org>, penberg@...nel.org,
	"Shi, Alex" <alex.shi@...el.com>,
	"Chen, Tim C" <tim.c.chen@...el.com>
Subject: Re: [patch 2/2]slub: add a type for slab partial list position

On Tue, 23 Aug 2011, Shaohua Li wrote:

> Adding slab to partial list head/tail is sensentive to performance.
> So adding a type to document it to avoid we get it wrong.

I think that if you want to make it more descriptive then using the stats
values (DEACTIVATE_TO_TAIL/HEAD) would avoid having to introduce an
additional enum and it would also avoid the if statement in the stat call.

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