From: Johannes Weiner <hannes@xxxxxxxxxxx>
[ Turned email suggestions into patch plus fixes. ]
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
mm/huge_memory.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
Index: tip/mm/huge_memory.c
===================================================================
--- tip.orig/mm/huge_memory.c
+++ tip/mm/huge_memory.c
@@ -742,6 +742,7 @@ void do_huge_pmd_numa_page(struct mm_str
unsigned int flags, pmd_t entry)
{
unsigned long haddr = address & HPAGE_PMD_MASK;
+ struct mem_cgroup *memcg = NULL;
struct page *new_page = NULL;
struct page *page = NULL;
int node, lru;
@@ -800,6 +801,8 @@ migrate:
if (!new_page)
goto alloc_fail;
+ mem_cgroup_prepare_migration(page, new_page, &memcg);
+
lru = PageLRU(page);
if (lru && isolate_lru_page(page)) /* does an implicit get_page() */
@@ -852,14 +855,19 @@ migrate:
put_page(page); /* drop the LRU isolation reference */
unlock_page(new_page);
+
+ mem_cgroup_end_migration(memcg, page, new_page, true);
+
unlock_page(page);
put_page(page); /* Drop the local reference */
return;
alloc_fail:
- if (new_page)
+ if (new_page) {
+ mem_cgroup_end_migration(memcg, page, new_page, false);
put_page(new_page);
+ }
unlock_page(page);
--
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