On Sat, Aug 20, 2011 at 02:11:53AM +0530, Rajesh Ghanekar wrote: > Hi, > I am confused with what protects page->lru? Is it both zone->lru_lock or > zone->lock? I can see it being protected either by lru_lock or lock. It's not so much about page->lru but the actual list the page is linked to. The zone's lists of unallocated pages are protected by zone->lock, while the LRU lists with the pages for userspace are protected by zone->lru_lock. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>