The patch titled
memcg: simplify mem_cgroup_dirty_info()
has been added to the -mm tree. Its filename is
memcg-simplify-mem_cgroup_dirty_info.patch
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------------------------------------------------------
Subject: memcg: simplify mem_cgroup_dirty_info()
From: Greg Thelen <gthelen@xxxxxxxxxx>
Because mem_cgroup_page_stat() no longer returns negative numbers to
indicate failure, mem_cgroup_dirty_info() does not need to check for such
failures.
Signed-off-by: Greg Thelen <gthelen@xxxxxxxxxx>
Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Dave Young <hidave.darkstar@xxxxxxxxx>
Cc: Andrea Righi <arighi@xxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff -puN mm/memcontrol.c~memcg-simplify-mem_cgroup_dirty_info mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-simplify-mem_cgroup_dirty_info
+++ a/mm/memcontrol.c
@@ -1258,8 +1258,6 @@ bool mem_cgroup_dirty_info(unsigned long
__mem_cgroup_dirty_param(&dirty_param, memcg);
value = mem_cgroup_page_stat(memcg, MEMCG_NR_DIRTYABLE_PAGES);
- if (value < 0)
- goto done;
available_mem = min((unsigned long)value, sys_available_mem);
@@ -1279,15 +1277,9 @@ bool mem_cgroup_dirty_info(unsigned long
(dirty_param.dirty_background_ratio *
available_mem) / 100;
- value = mem_cgroup_page_stat(memcg, MEMCG_NR_RECLAIM_PAGES);
- if (value < 0)
- goto done;
- info->nr_reclaimable = value;
-
- value = mem_cgroup_page_stat(memcg, MEMCG_NR_WRITEBACK);
- if (value < 0)
- goto done;
- info->nr_writeback = value;
+ info->nr_reclaimable =
+ mem_cgroup_page_stat(memcg, MEMCG_NR_RECLAIM_PAGES);
+ info->nr_writeback = mem_cgroup_page_stat(memcg, MEMCG_NR_WRITEBACK);
valid = true;
_
Patches currently in -mm which might be from gthelen@xxxxxxxxxx are
memcg-add-page_cgroup-flags-for-dirty-page-tracking.patch
memcg-document-cgroup-dirty-memory-interfaces.patch
memcg-document-cgroup-dirty-memory-interfaces-fix.patch
memcg-create-extensible-page-stat-update-routines.patch
memcg-add-lock-to-synchronize-page-accounting-and-migration.patch
writeback-create-dirty_info-structure.patch
memcg-add-dirty-page-accounting-infrastructure.patch
memcg-add-kernel-calls-for-memcg-dirty-page-stats.patch
memcg-add-dirty-limits-to-mem_cgroup.patch
memcg-add-dirty-limits-to-mem_cgroup-use-native-word-to-represent-dirtyable-pages.patch
memcg-add-dirty-limits-to-mem_cgroup-catch-negative-per-cpu-sums-in-dirty-info.patch
memcg-add-dirty-limits-to-mem_cgroup-avoid-overflow-in-memcg_hierarchical_free_pages.patch
memcg-add-dirty-limits-to-mem_cgroup-correct-memcg_hierarchical_free_pages-return-type.patch
memcg-add-dirty-limits-to-mem_cgroup-avoid-free-overflow-in-memcg_hierarchical_free_pages.patch
memcg-cpu-hotplug-lockdep-warning-fix.patch
memcg-add-cgroupfs-interface-to-memcg-dirty-limits.patch
memcg-break-out-event-counters-from-other-stats.patch
memcg-check-memcg-dirty-limits-in-page-writeback.patch
memcg-use-native-word-page-statistics-counters.patch
memcg-use-native-word-page-statistics-counters-fix.patch
memcg-add-mem_cgroup-parameter-to-mem_cgroup_page_stat.patch
memcg-pass-mem_cgroup-to-mem_cgroup_dirty_info.patch
memcg-make-throttle_vm_writeout-memcg-aware.patch
memcg-simplify-mem_cgroup_page_stat.patch
memcg-simplify-mem_cgroup_dirty_info.patch
memcg-make-mem_cgroup_page_stat-return-value-unsigned.patch
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