Re: [BUGFIX][PATCH 3/4] mecg: fix oom flag at THP charge

Thanks to Johanns and Daisuke for suggestion.
=
Hugepage allocation shouldn't trigger oom.
Allocation failure is not fatal.

Orignal-patch-by: Johannes Weiner [off-list ref]
Signed-off-by: KAMEZAWA Hiroyuki <redacted>
---
 mm/memcontrol.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: mmotm-0125/mm/memcontrol.c
===================================================================

--- mmotm-0125.orig/mm/memcontrol.c
+++ mmotm-0125/mm/memcontrol.c

@@ -2369,11 +2369,14 @@ static int mem_cgroup_charge_common(stru
 	struct page_cgroup *pc;
 	int ret;
 	int page_size = PAGE_SIZE;
+	bool oom;
 
 	if (PageTransHuge(page)) {
 		page_size <<= compound_order(page);
 		VM_BUG_ON(!PageTransHuge(page));
-	}
+		oom = false;
+	} else
+		oom = true;