From: Christoph Lameter <clameter@sgi.com>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>,
linux-kernel@vger.kernel.org, lethal@linux-sh.org,
dhowells@redhat.com
Subject: Re: [RFC/PATCH 3/3] SLOB: make ksize() more strict for page allocator pass-through
Date: Wed, 21 May 2008 14:16:40 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0805211415420.17915@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <4834905E.9010802@cs.helsinki.fi>
On Thu, 22 May 2008, Pekka Enberg wrote:
> Christoph Lameter wrote:
> > I also would prefer to keep this out of SLUB. Set/Clear PageSlab dirties the
> > cacheline and it forces the unlining of kmalloc_large.
>
> Hmm, well, that leaves ksize() open for more abuse. I guess we'll just have to
> live with that then.
SLUB could add a BUG_ON(!PageCompound ) since we added buffering for order
0 allocs. So only order 1 and higher go through kmalloc large. That should
catch the general case.
prev parent reply other threads:[~2008-05-21 21:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-21 18:26 Pekka J Enberg
2008-05-21 19:07 ` Matt Mackall
2008-05-21 19:11 ` Pekka Enberg
2008-05-21 21:12 ` Christoph Lameter
2008-05-21 21:13 ` Pekka Enberg
2008-05-21 21:16 ` Christoph Lameter [this message]
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