linux-kernel - Re: [slubllv7 06/17] slub: Add cmpxchg_double

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Message-ID: <1310486781.2871.19.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Tue, 12 Jul 2011 18:06:21 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	David Rientjes <rientjes@...gle.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [slubllv7 06/17] slub: Add cmpxchg_double_slab()

Le mardi 12 juillet 2011 à 10:59 -0500, Christoph Lameter a écrit :

> We do not need to have _count included. This is just there because the
> field is in the way on 64 bit and we can only do 2x 64 bit cmpxchges.  On
> 32 bi we can drop _count from "counters".
> 

OK, thanks for clarification.


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