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@kvack.org.  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@kvack.org"> email@kvack.org </a>