linux-kernel - Re: slab allocators: Remove obsolete SLAB_MUST_HWCACHE

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Message-ID: <84144f020704170031h9421d05t2174639ac8f2d894@mail.gmail.com>
Date:	Tue, 17 Apr 2007 10:31:06 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Christoph Lameter" <clameter@....com>
Cc:	akpm@...ux-foundation.com, linux-kernel@...r.kernel.org
Subject: Re: slab allocators: Remove obsolete SLAB_MUST_HWCACHE_ALIGN

On 4/17/07, Christoph Lameter <clameter@....com> wrote:
> The flag SLAB_MUST_HWCACHE_ALIGN is
>
> 1. Never checked by SLAB at all.
>
> 2. A duplicate of SLAB_HWCACHE_ALIGN for SLUB
>
> 3. Fulfills the role of SLAB_HWCACHE_ALIGN for SLOB.
>
> The only remaining use is in sparc64 and ppc64 and their use there
> reflects some earlier role that the slab flag once may have had. If
> its specified then SLAB_HWCACHE_ALIGN is also specified.
>
> The flag is confusing, inconsistent and has no purpose.
>
> Remove it.

Acked-by: Pekka Enberg <penberg@...helsinki.fi>
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