Subject: + mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix.patch added to -mm tree
To: hannes@xxxxxxxxxxx,mhocko@xxxxxxx,rientjes@xxxxxxxxxx,tj@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 17 Apr 2014 11:54:02 -0700
The patch titled
Subject: mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix
has been added to the -mm tree. Its filename is
mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix
Update Documentation/cgroups/memory.txt
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/cgroups/memory.txt | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff -puN Documentation/cgroups/memory.txt~mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix Documentation/cgroups/memory.txt
--- a/Documentation/cgroups/memory.txt~mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix
+++ a/Documentation/cgroups/memory.txt
@@ -535,17 +535,15 @@ Note:
5.3 swappiness
-Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.
+Similar to /proc/sys/vm/swappiness, but only affecting reclaim that is
+triggered by this cgroup's hard limit. The tunable in the root cgroup
+corresponds to the global swappiness setting.
+
Please note that unlike the global swappiness, memcg knob set to 0
really prevents from any swapping even if there is a swap storage
available. This might lead to memcg OOM killer if there are no file
pages to reclaim.
-Following cgroups' swappiness can't be changed.
-- root cgroup (uses /proc/sys/vm/swappiness).
-- a cgroup which uses hierarchy and it has other cgroup(s) below it.
-- a cgroup which uses hierarchy and not the root of hierarchy.
-
5.4 failcnt
A memory cgroup provides memory.failcnt and memory.memsw.failcnt files.
@@ -754,7 +752,6 @@ You can disable the OOM-killer by writin
#echo 1 > memory.oom_control
-This operation is only allowed to the top cgroup of a sub-hierarchy.
If OOM-killer is disabled, tasks under cgroup will hang/sleep
in memory cgroup's OOM-waitqueue when they request accountable memory.
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
slb-charge-slabs-to-kmemcg-explicitly.patch
mm-get-rid-of-__gfp_kmemcg.patch
pagewalk-update-page-table-walker-core.patch
pagewalk-add-walk_page_vma.patch
smaps-redefine-callback-functions-for-page-table-walker.patch
clear_refs-redefine-callback-functions-for-page-table-walker.patch
pagemap-redefine-callback-functions-for-page-table-walker.patch
numa_maps-redefine-callback-functions-for-page-table-walker.patch
memcg-redefine-callback-functions-for-page-table-walker.patch
arch-powerpc-mm-subpage-protc-use-walk_page_vma-instead-of-walk_page_range.patch
pagewalk-remove-argument-hmask-from-hugetlb_entry.patch
mempolicy-apply-page-table-walker-on-queue_pages_range.patch
mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control.patch
mm-memcontrol-remove-hierarchy-restrictions-for-swappiness-and-oom_control-fix.patch
linux-next.patch
debugging-keep-track-of-page-owners.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
