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memcg: soft limit reclaim should end at limit not below

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Soft limit reclaim continues until the usage is below the current soft
limit, but the documented semantics are actually that soft limit reclaim
will push usage back until the soft limits are met again.

Signed-off-by: Johannes Weiner <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Daisuke Nishimura <[email protected]>
Acked-by: Balbir Singh <[email protected]>
Cc: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2011-03-23 16:42:20 -07:00 • committed by Linus Torvalds
commit b7c6167848
2 changed files with 3 additions and 3 deletions
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2
mm/memcontrol.c
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@ -1477,7 +1477,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
return ret;
total += ret;
if (check_soft) {
if (res_counter_check_under_soft_limit(&root_mem->res))
if (res_counter_check_within_soft_limit(&root_mem->res))
return total;
} else if (mem_cgroup_check_under_limit(root_mem))
return 1 + total;