mm: memcg: rename memcg_oom_recover()

Rename memcg_oom_recover() into memcg1_oom_recover() for consistency with
other memory cgroup v1-related functions.

Move the declaration in mm/memcontrol-v1.h to be nearby other memcg v1 oom
handling functions.

Link: https://lkml.kernel.org/r/20240625005906.106920-10-roman.gushchin@linux.devSigned-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>

mm/memcontrol-v1.c

@@ -1090,8 +1090,8 @@ static void __mem_cgroup_clear_mc(void)
 
 		mc.moved_swap = 0;
 	}
-	memcg_oom_recover(from);
-	memcg_oom_recover(to);
+	memcg1_oom_recover(from);
+	memcg1_oom_recover(to);
 	wake_up_all(&mc.waitq);
 }
 
@@ -2067,7 +2067,7 @@ static int memcg_oom_wake_function(wait_queue_entry_t *wait,
 	return autoremove_wake_function(wait, mode, sync, arg);
 }
 
-void memcg_oom_recover(struct mem_cgroup *memcg)
+void memcg1_oom_recover(struct mem_cgroup *memcg)
 {
 	/*
 	 * For the following lockless ->under_oom test, the only required

mm/memcontrol-v1.h

@@ -13,7 +13,6 @@ static inline void memcg1_soft_limit_reset(struct mem_cgroup *memcg)
 
 void mem_cgroup_charge_statistics(struct mem_cgroup *memcg, int nr_pages);
 void memcg1_check_events(struct mem_cgroup *memcg, int nid);
-void memcg_oom_recover(struct mem_cgroup *memcg);
 int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask,
 		     unsigned int nr_pages);
 
@@ -92,5 +91,6 @@ ssize_t memcg_write_event_control(struct kernfs_open_file *of,
 
 bool memcg1_oom_prepare(struct mem_cgroup *memcg, bool *locked);
 void memcg1_oom_finish(struct mem_cgroup *memcg, bool locked);
+void memcg1_oom_recover(struct mem_cgroup *memcg);
 
 #endif	/* __MM_MEMCONTROL_V1_H */

mm/memcontrol.c

@@ -3165,7 +3165,7 @@ static int mem_cgroup_resize_max(struct mem_cgroup *memcg,
 	} while (true);
 
 	if (!ret && enlarge)
-		memcg_oom_recover(memcg);
+		memcg1_oom_recover(memcg);
 
 	return ret;
 }
@@ -3750,7 +3750,7 @@ static int mem_cgroup_oom_control_write(struct cgroup_subsys_state *css,
 
 	WRITE_ONCE(memcg->oom_kill_disable, val);
 	if (!val)
-		memcg_oom_recover(memcg);
+		memcg1_oom_recover(memcg);
 
 	return 0;
 }
@@ -5444,7 +5444,7 @@ static void uncharge_batch(const struct uncharge_gather *ug)
 			page_counter_uncharge(&ug->memcg->memsw, ug->nr_memory);
 		if (ug->nr_kmem)
 			memcg_account_kmem(ug->memcg, -ug->nr_kmem);
-		memcg_oom_recover(ug->memcg);
+		memcg1_oom_recover(ug->memcg);
 	}
 
 	local_irq_save(flags);