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| author | Johannes Weiner <hannes@cmpxchg.org> | 2014-08-06 16:05:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 18:01:17 -0700 |
| commit | 28c34c291e746aab1c2bfd6d6609b2e47fa0978b (patch) | |
| tree | 8c9c3c2264e4a63043c7849c6991d4f7927a6096 | |
| parent | 06b078fc065fe1fe7097675c8ee416aa2ef94fb3 (diff) | |
| download | lwn-28c34c291e746aab1c2bfd6d6609b2e47fa0978b.tar.gz lwn-28c34c291e746aab1c2bfd6d6609b2e47fa0978b.zip | |
mm: memcontrol: reclaim at least once for __GFP_NORETRY
Currently, __GFP_NORETRY tries charging once and gives up before even
trying to reclaim. Bring the behavior on par with the page allocator
and reclaim at least once before giving up.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index f7b6bec9f538..a73f3947f5d9 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2613,13 +2613,13 @@ retry: if (!(gfp_mask & __GFP_WAIT)) goto nomem; - if (gfp_mask & __GFP_NORETRY) - goto nomem; - nr_reclaimed = mem_cgroup_reclaim(mem_over_limit, gfp_mask, flags); if (mem_cgroup_margin(mem_over_limit) >= batch) goto retry; + + if (gfp_mask & __GFP_NORETRY) + goto nomem; /* * Even though the limit is exceeded at this point, reclaim * may have been able to free some pages. Retry the charge |