The patch titled Subject: mm: correctly charge compressed memory to its memcg has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-correctly-charge-compressed-memory-to-its-memcg.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: Li Liguang liliguang@baidu.com Subject: mm: correctly charge compressed memory to its memcg Date: Mon, 14 Nov 2022 14:48:28 -0500

Kswapd will reclaim memory when memory pressure is high, the annonymous memory will be compressed and stored in the zpool if zswap is enabled. The memcg_kmem_bypass() in get_obj_cgroup_from_page() will bypass the kernel thread and cause the compressed memory not be charged to its memory cgroup.

Remove the memcg_kmem_bypass() call and properly charge compressed memory to its corresponding memory cgroup.

Link: https://lore.kernel.org/linux-mm/CALvZod4nnn8BHYqAM4xtcR0Ddo2-Wr8uKm9h_CHWUa... Link: https://lkml.kernel.org/r/20221114194828.100822-1-hannes@cmpxchg.org Fixes: f4840ccfca25 ("zswap: memcg accounting") Signed-off-by: Li Liguang liliguang@baidu.com Signed-off-by: Johannes Weiner hannes@cmpxchg.org Acked-by: Shakeel Butt shakeelb@google.com Reviewed-by: Muchun Song songmuchun@bytedance.com Cc: Michal Hocko mhocko@suse.com Cc: Roman Gushchin roman.gushchin@linux.dev Cc: stable@vger.kernel.org [5.19+] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memcontrol.c~mm-correctly-charge-compressed-memory-to-its-memcg +++ a/mm/memcontrol.c @@ -3026,7 +3026,7 @@ struct obj_cgroup *get_obj_cgroup_from_p { struct obj_cgroup *objcg;

- if (!memcg_kmem_enabled() || memcg_kmem_bypass()) + if (!memcg_kmem_enabled()) return NULL;

if (PageMemcgKmem(page)) { _

Patches currently in -mm which might be from liliguang@baidu.com are

mm-correctly-charge-compressed-memory-to-its-memcg.patch