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| author | Shakeel Butt <shakeelb@google.com> | 2018-06-07 17:07:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:36 -0700 |
| commit | bb4a7ea2b1449722cec9d787dca5a74ca36e8eeb (patch) | |
| tree | 3d4eb1f9a420f3ea5a4b62ad013c42870f99b0d8 /mm/memcontrol.c | |
| parent | 8dd53fd3b702c12050ec5ddd07b56f8c4608ebea (diff) | |
| download | linux-bb4a7ea2b1449722cec9d787dca5a74ca36e8eeb.tar.gz linux-bb4a7ea2b1449722cec9d787dca5a74ca36e8eeb.tar.bz2 linux-bb4a7ea2b1449722cec9d787dca5a74ca36e8eeb.zip | |
mm: memcontrol: drain stocks on resize limit
Resizing the memcg limit for cgroup-v2 drains the stocks before
triggering the memcg reclaim. Do the same for cgroup-v1 to make the
behavior consistent.
Link: http://lkml.kernel.org/r/20180504205548.110696-1-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 847a775af225..18dcdac0b158 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2450,6 +2450,7 @@ static int mem_cgroup_resize_max(struct mem_cgroup *memcg, unsigned long max, bool memsw) { bool enlarge = false; + bool drained = false; int ret; bool limits_invariant; struct page_counter *counter = memsw ? &memcg->memsw : &memcg->memory; @@ -2480,6 +2481,12 @@ static int mem_cgroup_resize_max(struct mem_cgroup *memcg, if (!ret) break; + if (!drained) { + drain_all_stock(memcg); + drained = true; + continue; + } + if (!try_to_free_mem_cgroup_pages(memcg, 1, GFP_KERNEL, !memsw)) { ret = -EBUSY; |