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@xxxxxxxxxxxxxxxxxxxx> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> > Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> > Cc: Rik van Riel <riel@xxxxxxxxxx> > Cc: Mel Gorman <mgorman@xxxxxxx> > Cc: Hugh Dickins <hughd@xxxxxxxxxx> > Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Confirmation from the RT people that they're ok with this would be nice but otherwise Acked-by: Mel Gorman <mgorman@xxxxxxx> -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>