Re: [PATCH] memcg: Fix thresholds for 32b architectures.

From: Michal Hocko
Date: Tue Oct 27 2015 - 14:25:21 EST


On Tue 27-10-15 09:23:31, Johannes Weiner wrote:
[...]
> > Fixes: 424cdc141380 ("memcg: convert threshold to bytes")
> > Fixes: 3e32cb2e0a12 ("mm: memcontrol: lockless page counters")
> > CC: stable@xxxxxxxxxxxxxxx
> > Reported-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> > Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Thanks!

>
> > +++ b/mm/memcontrol.c
> > @@ -2802,7 +2802,7 @@ static unsigned long tree_stat(struct mem_cgroup *memcg,
> > return val;
> > }
> >
> > -static inline u64 mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
> > +static inline unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
> > {
> > u64 val;
>
> Minor nit, but this should probably be unsigned long now.

Yeah, I've missed this. Andrew, do you want me to post a new version or
you can fold a trivial update here?
---
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2823cafc269e..f4c09c4e895f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2804,7 +2804,7 @@ static unsigned long tree_stat(struct mem_cgroup *memcg,

static inline unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
{
- u64 val;
+ unsigned long val;

if (mem_cgroup_is_root(memcg)) {
val = tree_stat(memcg, MEM_CGROUP_STAT_CACHE);

--
Michal Hocko
SUSE Labs
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