On Tue, 13 Mar 2012 17:31:52 +0400, Glauber Costa <glommer@xxxxxxxxxxxxx> wrote: > On 03/13/2012 11:07 AM, Aneesh Kumar K.V wrote: > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > > index 8cac77b..f4aa11c 100644 > > --- a/mm/memcontrol.c > > +++ b/mm/memcontrol.c > > @@ -2901,6 +2901,11 @@ __mem_cgroup_uncharge_common(struct page *page, enum charge_type ctype) > > > > if (PageSwapCache(page)) > > return NULL; > > + /* > > + * HugeTLB page uncharge happen in the HugeTLB compound page destructor > > + */ > > + if (PageHuge(page)) > > + return NULL; > > Maybe it is better to call uncharge_common from the compound destructor, > so we can have all the uncharge code in a single place. > PageHuge is not represented by a page flags as SwapCache. Hence I was not able to call uncharge_common from compound destructor. For SwapCache, we clear the flag and call uncharge_common again. Also I will have to update those functions to take the resource counter index as argument so that we end up updated the right resource counter in the counter array. That would result in more code changes and I was not sure about that. -aneesh -- 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>