The patch titled
memcg: fix build warning and avoid checking for mem != null again and again
has been added to the -mm tree. Its filename is
memcg-fix-build-warning-and-avoid-checking-for-mem-=-null-again-and-again.patch
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------------------------------------------------------
Subject: memcg: fix build warning and avoid checking for mem != null again and again
From: Nikanth Karthikesan <knikanth@xxxxxxx>
Fix build warning, "mem_cgroup_is_obsolete defined but not used" when
CONFIG_DEBUG_VM is not set. Also avoid checking for !mem again and again.
Signed-off-by: Nikanth Karthikesan <knikanth@xxxxxxx>
Acked-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff -puN mm/memcontrol.c~memcg-fix-build-warning-and-avoid-checking-for-mem-=-null-again-and-again mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-fix-build-warning-and-avoid-checking-for-mem-=-null-again-and-again
+++ a/mm/memcontrol.c
@@ -314,14 +314,6 @@ static struct mem_cgroup *try_get_mem_cg
return mem;
}
-static bool mem_cgroup_is_obsolete(struct mem_cgroup *mem)
-{
- if (!mem)
- return true;
- return css_is_removed(&mem->css);
-}
-
-
/*
* Call callback function against all cgroup under hierarchy tree.
*/
@@ -932,7 +924,7 @@ static int __mem_cgroup_try_charge(struc
if (unlikely(!mem))
return 0;
- VM_BUG_ON(!mem || mem_cgroup_is_obsolete(mem));
+ VM_BUG_ON(css_is_removed(&mem->css));
while (1) {
int ret;
_
Patches currently in -mm which might be from knikanth@xxxxxxx are
memcg-fix-build-warning-and-avoid-checking-for-mem-=-null-again-and-again.patch
linux-next.patch
block-prevent-possible-io_context-refcount-overflow.patch
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