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    SubjectRe: [PATCH 1/2] mm/rmap: Convert the struct anon_vma::mutex to an rwsem
    On 12/01/2012 03:10 PM, 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>

    Reviewed-by: Rik van Riel <riel@redhat.com>


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