On Wed, 23 Nov 2011 16:42:27 +0100 Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > From: Johannes Weiner <jweiner@xxxxxxxxxx> > > Pages have their corresponding page_cgroup descriptors set up before > they are used in userspace, and thus managed by a memory cgroup. > > The only time where lookup_page_cgroup() can return NULL is in the > page sanity checking code that executes while feeding pages into the > page allocator for the first time. > > Remove the NULL checks against lookup_page_cgroup() results from all > callsites where we know that corresponding page_cgroup descriptors > must be allocated. > > Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- 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>