Re: [RFC/PATCH 3/3] SLOB: make ksize() more strict for page allocatorpass-through
From: Christoph Lameter
Date: Wed May 21 2008 - 17:17:10 EST
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.
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