The patch titled
Subject: mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix
has been removed from the -mm tree. Its filename was
mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix.patch
This patch was dropped because it was folded into mm-oom-add-cgroup-v2-mount-option-for-cgroup-aware-oom-killer.patch
------------------------------------------------------
From: Roman Gushchin <guro@xxxxxx>
Subject: mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix
Add a note that cgroup-aware OOM logic is disabled by default
and describe how to enable it.
Link: http://lkml.kernel.org/r/20171201170149.GB27436@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Roman Gushchin <guro@xxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/cgroup-v2.rst | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/Documentation/admin-guide/cgroup-v2.rst~mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix
+++ a/Documentation/admin-guide/cgroup-v2.rst
@@ -1092,6 +1092,9 @@ PAGE_SIZE multiple when read back.
and will never kill the unkillable task, even if memory.oom_group
is set.
+ If cgroup-aware OOM killer is not enabled, ENOTSUPP error
+ is returned on attempt to access the file.
+
memory.events
A read-only flat-keyed file which exists on non-root cgroups.
The following entries are defined. Unless specified
@@ -1322,6 +1325,12 @@ OOM Killer
Cgroup v2 memory controller implements a cgroup-aware OOM killer.
It means that it treats cgroups as first class OOM entities.
+Cgroup-aware OOM logic is turned off by default and requires
+passing the "groupoom" option on mounting cgroupfs. It can also
+by remounting cgroupfs with the following command::
+
+ # mount -o remount,groupoom $MOUNT_POINT
+
Under OOM conditions the memory controller tries to make the best
choice of a victim, looking for a memory cgroup with the largest
memory footprint, considering leaf cgroups and cgroups with the
_
Patches currently in -mm which might be from guro@xxxxxx are
mm-introduce-mem_cgroup_put-helper.patch
mm-oom-refactor-the-oom_kill_process-function.patch
mm-implement-mem_cgroup_scan_tasks-for-the-root-memory-cgroup.patch
mm-oom-cgroup-aware-oom-killer.patch
mm-oom-introduce-memoryoom_group.patch
mm-oom-add-cgroup-v2-mount-option-for-cgroup-aware-oom-killer.patch
cgroup-list-groupoom-in-cgroup-features.patch
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