linux-kernel - Re: unaligned accesses in SLAB etc.

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Message-ID: <CAAmzW4Pc=i9zHh5133Zc1rDRM1vaot18xXYwoMk8tTGtttwFgw@mail.gmail.com>
Date:	Mon, 13 Oct 2014 02:43:57 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: unaligned accesses in SLAB etc.

2014-10-13 2:30 GMT+09:00 David Miller <davem@...emloft.net>:
> From: Joonsoo Kim <js1304@...il.com>
> Date: Mon, 13 Oct 2014 02:22:15 +0900
>
>> Could you test below patch?
>> If it fixes your problem, I will send it with proper description.
>
> It works, I just tested using ARCH_KMALLOC_MINALIGN which would be
> better.

Oops. resend with whole Cc list.

Thanks for testing.
ARCH_KMALLOC_MINALIGN is for object alignment,
but, current problem is caused by alignment of cpu cache array.
I think that my fix is more proper in this situation.
I will send fix tomorrow,
because I'd like to test more and it's 2:42 am. :)

Thanks.
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