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memcg: convert threshold to bytes

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page_counter_memparse() returns pages for the threshold, while
mem_cgroup_usage() returns bytes for memory usage.  Convert the
threshold to bytes.

Fixes: 3e32cb2e0a ("memcg: rename cgroup_event to mem_cgroup_event").
Signed-off-by: Shaohua Li <shli@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Shaohua Li 2015-10-15 15:28:29 -07:00 committed by Linus Torvalds
parent 8d740a37b9
commit 424cdc1413
1 changed files with 1 additions and 0 deletions
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1
mm/memcontrol.c
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@ -3387,6 +3387,7 @@ static int __mem_cgroup_usage_register_event(struct mem_cgroup *memcg,
ret = page_counter_memparse(args, "-1", &threshold); ret = page_counter_memparse(args, "-1", &threshold);
if (ret) if (ret)
return ret; return ret;
threshold <<= PAGE_SHIFT;
mutex_lock(&memcg->thresholds_lock); mutex_lock(&memcg->thresholds_lock);