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SubjectRe: [PATCH 1/2] mm/rmap: Convert the struct anon_vma::mutex to an rwsem
On Sat, Dec 01, 2012 at 09:10:30PM +0100, Ingo Molnar wrote:
>
> Convert the struct anon_vma::mutex to an rwsem, which will help
> in solving a page-migration scalability problem. (Addressed in
> a separate patch.)
>
> The conversion is simple and straightforward: in every case
> where we mutex_lock()ed we'll now down_write().
>
> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Cc: Andrea Arcangeli <aarcange@redhat.com>
> Cc: Rik van Riel <riel@redhat.com>
> Cc: Mel Gorman <mgorman@suse.de>
> Cc: Hugh Dickins <hughd@google.com>
> Signed-off-by: Ingo Molnar <mingo@kernel.org>

Confirmation from the RT people that they're ok with this would be nice
but otherwise

Acked-by: Mel Gorman <mgorman@suse.de>

--
Mel Gorman
SUSE Labs


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