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mm: kmem: make __memcg_kmem_(un)charge static

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I've noticed that __memcg_kmem_charge() and __memcg_kmem_uncharge() are
not used anywhere except memcontrol.c.  Yet they are not declared as
non-static and are declared in memcontrol.h.

This patch makes them static.

Link: https://lkml.kernel.org/r/20210108020332.4096911-1-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roman Gushchin 2021-02-24 12:03:58 -08:00 committed by Linus Torvalds
parent b603894248
commit c1a660dea3
2 changed files with 8 additions and 6 deletions
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3
include/linux/memcontrol.h
View File

@ -1592,9 +1592,6 @@ static inline void memcg_set_shrinker_bit(struct mem_cgroup *memcg,
#endif
#ifdef CONFIG_MEMCG_KMEM
int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
unsigned int nr_pages);
void __memcg_kmem_uncharge(struct mem_cgroup *memcg, unsigned int nr_pages);
int __memcg_kmem_charge_page(struct page *page, gfp_t gfp, int order);
void __memcg_kmem_uncharge_page(struct page *page, int order);

11
mm/memcontrol.c
View File

@ -255,6 +255,11 @@ struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr)
#ifdef CONFIG_MEMCG_KMEM
extern spinlock_t css_set_lock;
static int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
unsigned int nr_pages);
static void __memcg_kmem_uncharge(struct mem_cgroup *memcg,
unsigned int nr_pages);
static void obj_cgroup_release(struct percpu_ref *ref)
{
struct obj_cgroup *objcg = container_of(ref, struct obj_cgroup, refcnt);
@ -3087,8 +3092,8 @@ static void memcg_free_cache_id(int id)
*
* Returns 0 on success, an error code on failure.
*/
int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
unsigned int nr_pages)
static int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
unsigned int nr_pages)
{
struct page_counter *counter;
int ret;
@ -3120,7 +3125,7 @@ int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp,
* @memcg: memcg to uncharge
* @nr_pages: number of pages to uncharge
*/
void __memcg_kmem_uncharge(struct mem_cgroup *memcg, unsigned int nr_pages)
static void __memcg_kmem_uncharge(struct mem_cgroup *memcg, unsigned int nr_pages)
{
if (!cgroup_subsys_on_dfl(memory_cgrp_subsys))
page_counter_uncharge(&memcg->kmem, nr_pages);