linux-kernel - Re: [RFC/PATCH RESEND -next 13/21] mm: slub: add allocation size field to struct kmem

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Message-id: <53BE528A.1080104@samsung.com>
Date:	Thu, 10 Jul 2014 12:44:58 +0400
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	Christoph Lameter <cl@...two.org>
Cc:	linux-kernel@...r.kernel.org, Dmitry Vyukov <dvyukov@...gle.com>,
	Konstantin Serebryany <kcc@...gle.com>,
	Alexey Preobrazhensky <preobr@...gle.com>,
	Andrey Konovalov <adech.fo@...il.com>,
	Yuri Gribov <tetra2005@...il.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Michal Marek <mmarek@...e.cz>,
	Russell King <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kbuild@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	x86@...nel.org, linux-mm@...ck.org
Subject: Re: [RFC/PATCH RESEND -next 13/21] mm: slub: add allocation size field
 to struct kmem_cache

On 07/09/14 18:33, Christoph Lameter wrote:
> On Wed, 9 Jul 2014, Andrey Ryabinin wrote:
> 
>> When caller creates new kmem_cache, requested size of kmem_cache
>> will be stored in alloc_size. Later alloc_size will be used by
>> kerenel address sanitizer to mark alloc_size of slab object as
>> accessible and the rest of its size as redzone.
> 
> I think this patch is not needed since object_size == alloc_size right?
> 

I vaguely remember there was a reason for this patch, but I can't see/recall it now.
Probably I misunderstood something. I'll drop this patch
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