On 05/22/2014 05:09 AM, Mel Gorman wrote: > From: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> > > We remove the call to grab_super_passive in call to super_cache_count. > This becomes a scalability bottleneck as multiple threads are trying to do > memory reclamation, e.g. when we are doing large amount of file read and > page cache is under pressure. The cached objects quickly got reclaimed > down to 0 and we are aborting the cache_scan() reclaim. But counting > creates a log jam acquiring the sb_lock. > Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- 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>