linux-kernel - Re: [PATCH] remove unnecessary cache flush on v6 copypage

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Date:	Thu, 7 Jul 2011 13:31:03 +0300
From:	saeed bishara <saeed.bishara@...il.com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	heechul Yun <heechul@...inois.edu>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] remove unnecessary cache flush on v6 copypage

On Thu, Jul 7, 2011 at 12:02 PM, Catalin Marinas
<catalin.marinas@....com> wrote:
> On Thursday, July 7, 2011, heechul Yun <heechul@...inois.edu> wrote:
>> ARM: mm: remove unnecessary cache flush on v6 copypage
I think you better mention that this is regarding v6 nonaliasing mode.
>>
>> Signed-off-by: Heechul Yun <heechul@...inois.edu>
>
> I would clarify the commit log a bit stating that this flush is no
> longer necessary because of commit c0177800. We had a good reason for
> adding the flush initially.
I agree, but I would also mention that the flush was needed in order
to coherent between dcache and icache, and now this is being handled
by __sync_icache_dcache
saeed
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