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>
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index ee8bb67..75dda1e 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -92,7 +92,7 @@
struct cgroup_subsys freezer_subsys;
-static struct cgroup_subsys_state *freezer_create(struct cgroup *cgroup)
+static struct cgroup_subsys_state *freezer_css_alloc(struct cgroup *cgroup)
{
struct freezer *freezer;
@@ -105,14 +105,14 @@
}
/**
- * freezer_post_create - commit creation of a freezer cgroup
+ * freezer_css_online - commit creation of a freezer cgroup
* @cgroup: cgroup being created
*
* We're committing to creation of @cgroup. Mark it online and inherit
* parent's freezing state while holding both parent's and our
* freezer->lock.
*/
-static int freezer_post_create(struct cgroup *cgroup)
+static int freezer_css_online(struct cgroup *cgroup)
{
struct freezer *freezer = cgroup_freezer(cgroup);
struct freezer *parent = parent_freezer(freezer);
@@ -141,13 +141,13 @@
}
/**
- * freezer_pre_destroy - initiate destruction of @cgroup
+ * freezer_css_offline - initiate destruction of @cgroup
* @cgroup: cgroup being destroyed
*
* @cgroup is going away. Mark it dead and decrement system_freezing_count
* if it was holding one.
*/
-static void freezer_pre_destroy(struct cgroup *cgroup)
+static void freezer_css_offline(struct cgroup *cgroup)
{
struct freezer *freezer = cgroup_freezer(cgroup);
@@ -161,7 +161,7 @@
spin_unlock_irq(&freezer->lock);
}
-static void freezer_destroy(struct cgroup *cgroup)
+static void freezer_css_free(struct cgroup *cgroup)
{
kfree(cgroup_freezer(cgroup));
}
@@ -477,10 +477,10 @@
struct cgroup_subsys freezer_subsys = {
.name = "freezer",
- .create = freezer_create,
- .post_create = freezer_post_create,
- .pre_destroy = freezer_pre_destroy,
- .destroy = freezer_destroy,
+ .css_alloc = freezer_css_alloc,
+ .css_online = freezer_css_online,
+ .css_offline = freezer_css_offline,
+ .css_free = freezer_css_free,
.subsys_id = freezer_subsys_id,
.attach = freezer_attach,
.fork = freezer_fork,