On Tue, Jun 07, 2011 at 04:07:03PM +0100, Mel Gorman wrote: > From: Andrea Arcangeli <aarcange@xxxxxxxxxx> > > From: Andrea Arcangeli <aarcange@xxxxxxxxxx> > > It is unsafe to run page_count during the physical pfn scan because > compound_head could trip on a dangling pointer when reading > page->first_page if the compound page is being freed by another CPU. > > [mgorman@xxxxxxx: Split out patch] > Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx> -- Kind regards Minchan Kim -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>