linux-kernel - Re: [S+Q3 00/23] SLUB: The Unified slab allocator (V3)

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Message-ID: <alpine.DEB.2.00.1008171433160.14588@router.home>
Date:	Tue, 17 Aug 2010 14:34:05 -0500 (CDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
cc:	Pekka Enberg <penberg@...helsinki.fi>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Nick Piggin <npiggin@...nel.dk>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [S+Q3 00/23] SLUB: The Unified slab allocator (V3)

On Tue, 17 Aug 2010, David Rientjes wrote:

> On Tue, 17 Aug 2010, Christoph Lameter wrote:
>
> > > I didn't know if that was a debugging patch for me or if you wanted to
> > > push that as part of your series, I'm not sure if you actually need to
> > > move it to kmem_cache_init() now that slub_state is protected by
> > > slub_lock.  I'm not sure if we want to allocate DMA objects between
> > > kmem_cache_init() and kmem_cache_init_late().
> >
> > Drivers may allocate dma buffers during initialization.
> >
>
> Ok, I moved the DMA cache creation from kmem_cache_init_late() to
> kmem_cache_init().  Note: the kasprintf() will need to use GFP_NOWAIT and
> not GFP_KERNEL now.

ok. I have revised the patch since there is also a problem with the
indirection on kmalloc_caches.


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