+ mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix.patch added to mm-unstable branch

+ mm-memcg-put-cgroup-v1-related-members-of-task_struct-under-config-option-fix.patch added to mm-unstable branch

[Andrew Morton]

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@linux.dev>
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@google.com
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@linux.dev 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