The patch titled
memcg: remove unused retry signal from reclaim
has been added to the -mm tree. Its filename is
memcg-remove-unused-retry-signal-from-reclaim.patch
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------------------------------------------------------
Subject: memcg: remove unused retry signal from reclaim
From: Johannes Weiner <hannes@xxxxxxxxxxx>
If the memcg reclaim code detects the target memcg below its limit it
exits and returns a guaranteed non-zero value so that the charge is
retried.
Nowadays, the charge side checks the memcg limit itself and does not rely
on this non-zero return value trick.
This patch removes it. The reclaim code will now always return the true
number of pages it reclaimed on its own.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Rik van Riel<riel@xxxxxxxxxx>
Acked-by: Ying Han<yinghan@xxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/memcontrol.c~memcg-remove-unused-retry-signal-from-reclaim mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-remove-unused-retry-signal-from-reclaim
+++ a/mm/memcontrol.c
@@ -1675,7 +1675,7 @@ static int mem_cgroup_hierarchical_recla
if (!res_counter_soft_limit_excess(&root_mem->res))
return total;
} else if (mem_cgroup_margin(root_mem))
- return 1 + total;
+ return total;
}
return total;
}
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
mm-vmscan-correct-use-of-pgdat_balanced-in-sleeping_prematurely.patch
mm-mem-hotplug-fix-section-mismatch-setup_per_zone_inactive_ratio-should-be-__meminit.patch
mm-vmalloc-remove-guard-page-from-between-vmap-blocks.patch
mm-break-out-page-allocation-warning-code.patch
mm-print-vmalloc-state-after-allocation-failures.patch
vmscan-change-shrink_slab-interfaces-by-passing-shrink_control.patch
vmscan-change-shrink_slab-interfaces-by-passing-shrink_control-fix.patch
vmscan-change-shrink_slab-interfaces-by-passing-shrink_control-fix-2.patch
vmscan-change-shrinker-api-by-passing-shrink_control-struct.patch
vmscan-change-shrinker-api-by-passing-shrink_control-struct-fix.patch
vmscan-change-shrinker-api-by-passing-shrink_control-struct-fix-2.patch
mm-batch-activate_page-to-reduce-lock-contention.patch
memcg-add-the-soft_limit-reclaim-in-global-direct-reclaim.patch
memcg-remove-unused-retry-signal-from-reclaim.patch
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