Michal Hocko <mhocko@xxxxxxx> writes: > On Wed 28-03-12 23:09:34, Aneesh Kumar K.V wrote: >> Michal Hocko <mhocko@xxxxxxx> writes: >> >> > On Fri 16-03-12 23:09:25, Aneesh Kumar K.V wrote: >> >> From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> >> >> >> >> This adds necessary charge/uncharge calls in the HugeTLB code >> > >> > This begs for more description... >> > Other than that it looks correct. >> > >> >> Updated as below >> >> hugetlb: add charge/uncharge calls for HugeTLB alloc/free >> >> This adds necessary charge/uncharge calls in the HugeTLB code. We do >> memcg charge in page alloc and uncharge in compound page destructor. >> We also need to ignore HugeTLB pages in __mem_cgroup_uncharge_common >> because that get called from delete_from_page_cache > > and from mem_cgroup_end_migration used during soft_offline_page. > > Btw., while looking at mem_cgroup_end_migration, I have noticed that you > need to take care of mem_cgroup_prepare_migration as well otherwise the > page would get charged as a normal (shmem) page. > Won't we skip HugeTLB pages in migrate ? check_range do check for is_vm_hugetlb_page. -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>