cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()

Rename cgroup_subsys css lifetime related callbacks to better describe
what their roles are.  Also, update documentation.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 08adaaae6fcc..8b0b2b028e23 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4922,7 +4922,7 @@ err_cleanup:
 }
 
 static struct cgroup_subsys_state * __ref
-mem_cgroup_create(struct cgroup *cont)
+mem_cgroup_css_alloc(struct cgroup *cont)
 {
         struct mem_cgroup *memcg, *parent;
         long error = -ENOMEM;
@@ -5003,14 +5003,14 @@ free_out:
         return ERR_PTR(error);
 }
 
-static void mem_cgroup_pre_destroy(struct cgroup *cont)
+static void mem_cgroup_css_offline(struct cgroup *cont)
 {
         struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
 
         mem_cgroup_reparent_charges(memcg);
 }
 
-static void mem_cgroup_destroy(struct cgroup *cont)
+static void mem_cgroup_css_free(struct cgroup *cont)
 {
         struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
 
@@ -5600,9 +5600,9 @@ static void mem_cgroup_move_task(struct cgroup *cont,
 struct cgroup_subsys mem_cgroup_subsys = {
         .name = "memory",
         .subsys_id = mem_cgroup_subsys_id,
-        .create = mem_cgroup_create,
-        .pre_destroy = mem_cgroup_pre_destroy,
-        .destroy = mem_cgroup_destroy,
+        .css_alloc = mem_cgroup_css_alloc,
+        .css_offline = mem_cgroup_css_offline,
+        .css_free = mem_cgroup_css_free,
         .can_attach = mem_cgroup_can_attach,
         .cancel_attach = mem_cgroup_cancel_attach,
         .attach = mem_cgroup_move_task,