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Date:	Thu, 3 Jan 2013 10:54:44 -0800
From:	Andy Lutomirski <>
To:	Michel Lespinasse <>
Cc:	Ingo Molnar <>, Al Viro <>,
	Hugh Dickins <>, Jorn_Engel <>,
	Rik van Riel <>,
	Andrew Morton <>,,
Subject: Re: [PATCH 10/9] mm: make do_mmap_pgoff return populate as a size in
 bytes, not as a bool

On Sat, Dec 22, 2012 at 1:45 AM, Michel Lespinasse <> wrote:
> do_mmap_pgoff() rounds up the desired size to the next PAGE_SIZE multiple,
> however there was no equivalent code in mm_populate(), which caused issues.
> This could be fixed by introduced the same rounding in mm_populate(),
> however I think it's preferable to make do_mmap_pgoff() return populate
> as a size rather than as a boolean, so we don't have to duplicate the
> size rounding logic in mm_populate().
> Signed-off-by: Michel Lespinasse <>

This appears to fix my hangs.

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