mm: memcontrol: only mark charged pages with PageKmemcg

[mirror_ubuntu-artful-kernel.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index fb975cec351821151a422fb34171121f67459228..ee744fa3b93d50a9215daf43966cc97f957c77a4 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1008,10 +1008,8 @@ static __always_inline bool free_pages_prepare(struct page *page,
        }
        if (PageMappingFlags(page))
                page->mapping = NULL;
-       if (memcg_kmem_enabled() && PageKmemcg(page)) {
+       if (memcg_kmem_enabled() && PageKmemcg(page))
                memcg_kmem_uncharge(page, order);
-               __ClearPageKmemcg(page);
-       }
        if (check_free)
                bad += free_pages_check(page);
        if (bad)
@@ -3756,12 +3754,10 @@ no_zone:
        }
 
 out:
-       if (memcg_kmem_enabled() && (gfp_mask & __GFP_ACCOUNT) && page) {
-               if (unlikely(memcg_kmem_charge(page, gfp_mask, order))) {
-                       __free_pages(page, order);
-                       page = NULL;
-               } else
-                       __SetPageKmemcg(page);
+       if (memcg_kmem_enabled() && (gfp_mask & __GFP_ACCOUNT) && page &&
+           unlikely(memcg_kmem_charge(page, gfp_mask, order) != 0)) {
+               __free_pages(page, order);
+               page = NULL;
        }
 
        if (kmemcheck_enabled && page)