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Message-ID: <CAJd=RBB8Yuk1FEQxTUbEEeD96oqnO26VojetuDgRo=JxOfnadw@mail.gmail.com>
Date:	Fri, 10 Aug 2012 20:53:36 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch] hugetlb: correct page offset index for sharing pmd

On Fri, Aug 10, 2012 at 8:51 PM, Michal Hocko <mhocko@...e.cz> wrote:
> On Fri 10-08-12 20:37:20, Hillf Danton wrote:
>> On Fri, Aug 10, 2012 at 8:27 PM, Michal Hocko <mhocko@...e.cz> wrote:
>> >
>> > I guess you mean unmap_ref_private and that has been changed by you
>> > (0c176d5 mm: hugetlb: fix pgoff computation when unmapping page from
>> > vma)...  I was wrong at that time when giving my Reviewed-by. The patch
>> > didn't break anything because you still find all relevant vmas because
>> > vma_hugecache_offset just provides a smaller index which is still within
>> > boundaries.
>>
>> No, as shown by the log message of 0c176d52b,  that fix was
>> triggered by  (vma->vm_pgoff >> PAGE_SHIFT), thus I dont see
>> what you really want to revert.
>
> fix for that would be a part of the revert of course.
>

Fine, go ahead ;)
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