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memcg: expose mem_cgroup_ino() and mem_cgroup_get_from_ino() unconditionally 

Remove the CONFIG_SHRINKER_DEBUG guards around mem_cgroup_ino() and
mem_cgroup_get_from_ino().  These APIs provide a way to get a memcg's
cgroup inode number and to look up a memcg from an inode number
respectively.

Making these functions unconditionally available allows other in-kernel
users to leverage them without requiring CONFIG_SHRINKER_DEBUG to be
enabled.

No functional change for existing users.

Link: https://lkml.kernel.org/r/20251225232116.294540-3-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: SeongJae Park <sj@kernel.org>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
master
Shakeel Butt 2025-12-25 15:21:10 -08:00 committed by Andrew Morton
parent e77786b468
commit 1d89d7fd59
2 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/memcontrol.h
View File

@ -836,14 +836,12 @@ static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg)
}
struct mem_cgroup *mem_cgroup_from_id(unsigned short id);
#ifdef CONFIG_SHRINKER_DEBUG
static inline unsigned long mem_cgroup_ino(struct mem_cgroup *memcg)
{
return memcg ? cgroup_ino(memcg->css.cgroup) : 0;
}
struct mem_cgroup *mem_cgroup_get_from_ino(unsigned long ino);
#endif
static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m)
{
@ -1308,7 +1306,6 @@ static inline struct mem_cgroup *mem_cgroup_from_private_id(unsigned short id)
return NULL;
}
#ifdef CONFIG_SHRINKER_DEBUG
static inline unsigned long mem_cgroup_ino(struct mem_cgroup *memcg)
{
return 0;
@ -1318,7 +1315,6 @@ static inline struct mem_cgroup *mem_cgroup_get_from_ino(unsigned long ino)
{
return NULL;
}
#endif
static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m)
{

2
mm/memcontrol.c
View File

@ -3620,7 +3620,6 @@ struct mem_cgroup *mem_cgroup_from_id(unsigned short id)
return mem_cgroup_from_private_id(id);
}
#ifdef CONFIG_SHRINKER_DEBUG
struct mem_cgroup *mem_cgroup_get_from_ino(unsigned long ino)
{
struct cgroup *cgrp;
@ -3641,7 +3640,6 @@ struct mem_cgroup *mem_cgroup_get_from_ino(unsigned long ino)
return memcg;
}
#endif
static void free_mem_cgroup_per_node_info(struct mem_cgroup_per_node *pn)
{