The patch titled
Subject: memcg: fix pgpgin/pgpgout documentation
has been added to the -mm tree. Its filename is
memcg-fix-pgpgin-pgpgout-documentation.patch
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------------------------------------------------------
From: Ying Han <yinghan@xxxxxxxxxx>
Subject: memcg: fix pgpgin/pgpgout documentation
The two memcg stats pgpgin/pgpgout have different meaning than the ones in
vmstat, which indicates that we picked a bad naming for them. It might be
late to change the stat name, but better documentation is always helpful.
Signed-off-by: Ying Han <yinghan@xxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/cgroups/memory.txt | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff -puN Documentation/cgroups/memory.txt~memcg-fix-pgpgin-pgpgout-documentation Documentation/cgroups/memory.txt
--- a/Documentation/cgroups/memory.txt~memcg-fix-pgpgin-pgpgout-documentation
+++ a/Documentation/cgroups/memory.txt
@@ -386,8 +386,11 @@ memory.stat file includes following stat
cache - # of bytes of page cache memory.
rss - # of bytes of anonymous and swap cache memory.
mapped_file - # of bytes of mapped file (includes tmpfs/shmem)
-pgpgin - # of pages paged in (equivalent to # of charging events).
-pgpgout - # of pages paged out (equivalent to # of uncharging events).
+pgpgin - # of charging events to the memory cgroup. The charging
+ event happens each time a page is accounted as either mapped
+ anon page(RSS) or cache page(Page Cache) to the cgroup.
+pgpgout - # of uncharging events to the memory cgroup. The uncharging
+ event happens each time a page is unaccounted from the cgroup.
swap - # of bytes of swap usage
inactive_anon - # of bytes of anonymous memory and swap cache memory on
LRU list.
_
Subject: Subject: memcg: fix pgpgin/pgpgout documentation
Patches currently in -mm which might be from yinghan@xxxxxxxxxx are
origin.patch
mm-memcg-consolidate-hierarchy-iteration-primitives.patch
mm-vmscan-distinguish-global-reclaim-from-global-lru-scanning.patch
mm-vmscan-distinguish-between-memcg-triggering-reclaim-and-memcg-being-scanned.patch
mm-memcg-per-priority-per-zone-hierarchy-scan-generations.patch
mm-move-memcg-hierarchy-reclaim-to-generic-reclaim-code.patch
mm-memcg-remove-optimization-of-keeping-the-root_mem_cgroup-lru-lists-empty.patch
mm-vmscan-convert-global-reclaim-to-per-memcg-lru-lists.patch
mm-collect-lru-list-heads-into-struct-lruvec.patch
mm-make-per-memcg-lru-lists-exclusive.patch
mm-memcg-remove-unused-node-section-info-from-pc-flags.patch
memcg-fix-pgpgin-pgpgout-documentation.patch
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