From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> mem_cgroup_cache_charge() has check for PageCompound(). The check prevents charging huge cache pages. I don't see a reason why the check is present. Looks like it's just legacy (introduced in 52d4b9a memcg: allocate all page_cgroup at boot). Let's just drop it. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxx> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> --- mm/memcontrol.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b6cd870..dc50c1a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3921,8 +3921,6 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, if (mem_cgroup_disabled()) return 0; - if (PageCompound(page)) - return 0; if (!PageSwapCache(page)) ret = mem_cgroup_charge_common(page, mm, gfp_mask, type); -- 1.8.3.2 -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>