Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock

[Peter Zijlstra]

On Mon, 2010-05-03 at 19:02 +0200, Andrea Arcangeli wrote:
> On Mon, May 03, 2010 at 06:55:12PM +0200, Peter Zijlstra wrote:
> > This does leave me worrying about concurrent faults poking at
> > vma->vm_end without synchronization.
> 
> I didn't check this patch in detail yet. I agree it can be removed and
> I think it can be safely replaced with the page_table_lock.

Sure, it could probably be replaced with the ptl, but a single
anon_vma->lock would I think be better since there's more of them.



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