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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2011-06-15 15:08:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-15 20:04:01 -0700 |
| commit | 7ae534d074e01e54d5cfbc9734b73fdfc855501f (patch) | |
| tree | 8c815762779fd79cc83db788aa29e6239212c3f4 /mm | |
| parent | 733eda7ac316cd4e550fa096e4ed42356dc546e7 (diff) | |
| download | blackbird-op-linux-7ae534d074e01e54d5cfbc9734b73fdfc855501f.tar.gz blackbird-op-linux-7ae534d074e01e54d5cfbc9734b73fdfc855501f.zip | |
memcg: fix wrong check of noswap with softlimit
Hierarchical reclaim doesn't swap out if memsw and resource limits are
thye same (memsw_is_minimum == true) because we would hit mem+swap limit
anyway (during hard limit reclaim).
If it comes to the soft limit we shouldn't consider memsw_is_minimum at
all because it doesn't make much sense. Either the soft limit is bellow
the hard limit and then we cannot hit mem+swap limit or the direct reclaim
takes a precedence.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 02a7947608ad..0b1a32cbd74d 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1663,7 +1663,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem, excess = res_counter_soft_limit_excess(&root_mem->res) >> PAGE_SHIFT; /* If memsw_is_minimum==1, swap-out is of-no-use. */ - if (root_mem->memsw_is_minimum) + if (!check_soft && root_mem->memsw_is_minimum) noswap = true; while (1) { |
