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-rw-r--r--mm/memcontrol.c5
-rw-r--r--mm/migrate.c2
2 files changed, 3 insertions, 4 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6424ba0fce83..8ab841031436 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2896,7 +2896,7 @@ int mem_cgroup_prepare_migration(struct page *page,
/* remove redundant charge if migration failed*/
void mem_cgroup_end_migration(struct mem_cgroup *mem,
- struct page *oldpage, struct page *newpage)
+ struct page *oldpage, struct page *newpage, bool migration_ok)
{
struct page *used, *unused;
struct page_cgroup *pc;
@@ -2905,8 +2905,7 @@ void mem_cgroup_end_migration(struct mem_cgroup *mem,
return;
/* blocks rmdir() */
cgroup_exclude_rmdir(&mem->css);
- /* at migration success, oldpage->mapping is NULL. */
- if (oldpage->mapping) {
+ if (!migration_ok) {
used = oldpage;
unused = newpage;
} else {
diff --git a/mm/migrate.c b/mm/migrate.c
index 5b7d1fd29621..46fe8cc13d67 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -768,7 +768,7 @@ skip_unmap:
uncharge:
if (!charge)
- mem_cgroup_end_migration(mem, page, newpage);
+ mem_cgroup_end_migration(mem, page, newpage, rc == 0);
unlock:
unlock_page(page);