On Wed, 23 Nov 2011 16:42:31 +0100 Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > From: Johannes Weiner <jweiner@xxxxxxxxxx> > > This bit is protected by lock_page_cgroup(), there is no need for > locked operations when setting and clearing it. > > Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx> Hm. non-atomic ops for pc->flags seems dangerous. How about try to remove PCG_CACHE ? Maybe we can depends on PageAnon(page). We see 'page' on memcg->lru now. I'm sorry I forgot why we needed PCG_CACHE flag.. Thanks, -Kame -- 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>