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>

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