Re: [PATCH 2/4] vma_adjust: fix the copying of anon_vma chains

[Johannes Weiner]

On Mon, Apr 12, 2010 at 01:23:04PM -0700, Linus Torvalds wrote:
> 
> From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Date: Sat, 10 Apr 2010 15:22:30 -0700
> Subject: [PATCH 2/4] vma_adjust: fix the copying of anon_vma chains
> 
> When we move the boundaries between two vma's due to things like
> mprotect, we need to make sure that the anon_vma of the pages that got
> moved from one vma to another gets properly copied around.  And that was
> not always the case, in this rather hard-to-follow code sequence.
> 
> Clarify the code, and fix it so that it copies the anon_vma from the
> right source.
> 
> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>

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