The patch titled
Subject: mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Subject: mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix
Date: Wed, 26 Jun 2024 18:00:22 +0000
better config option description provided by Michal
Link: https://lkml.kernel.org/r/ZnxXNtvqllc9CDoo@xxxxxxxxxx
Signed-off-by: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/Kconfig | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/init/Kconfig~mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix
+++ a/init/Kconfig
@@ -970,11 +970,19 @@ config MEMCG
Provides control over the memory footprint of tasks in a cgroup.
config MEMCG_V1
- bool "Legacy memory controller"
+ bool "Legacy cgroup v1 memory controller"
depends on MEMCG
default n
help
- Legacy cgroup v1 memory controller.
+ Legacy cgroup v1 memory controller which has been deprecated by
+ cgroup v2 implementation. The v1 is there for legacy applications
+ which haven't migrated to the new cgroup v2 interface yet. If you
+ do not have any such application then you are completely fine leaving
+ this option disabled.
+
+ Please note that feature set of the legacy memory controller is likely
+ going to shrink due to deprecation process. New deployments with v1
+ controller are highly discouraged.
San N is unsure.
_
Patches currently in -mm which might be from roman.gushchin@xxxxxxxxx are
mm-memcg-introduce-memcontrol-v1c.patch
mm-memcg-move-soft-limit-reclaim-code-to-memcontrol-v1c.patch
mm-memcg-rename-soft-limit-reclaim-related-functions.patch
mm-memcg-move-charge-migration-code-to-memcontrol-v1c.patch
mm-memcg-rename-charge-move-related-functions.patch
mm-memcg-move-legacy-memcg-event-code-into-memcontrol-v1c.patch
mm-memcg-rename-memcg_check_events.patch
mm-memcg-move-cgroup-v1-oom-handling-code-into-memcontrol-v1c.patch
mm-memcg-rename-memcg_oom_recover.patch
mm-memcg-move-cgroup-v1-interface-files-to-memcontrol-v1c.patch
mm-memcg-make-memcg1_update_tree-static.patch
mm-memcg-group-cgroup-v1-memcg-related-declarations.patch
mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option.patch
mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix.patch
maintainers-add-mm-memcontrol-v1c-h-to-the-list-of-maintained-files.patch
