Re: [PATCH] mm: hugetlb: fix pgoff computation when unmapping pagefrom vma

From: KAMEZAWA Hiroyuki
Date: Tue Dec 20 2011 - 21:47:49 EST


On Tue, 20 Dec 2011 21:45:51 +0800
Hillf Danton <dhillf@xxxxxxxxx> wrote:

> The computation for pgoff is incorrect, at least with
>
> (vma->vm_pgoff >> PAGE_SHIFT)
>
> involved. It is fixed with the available method if HPAGE_SIZE is concerned in
> page cache lookup.
>
> Cc: Michal Hocko <mhocko@xxxxxxx>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

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