1 files changed, 9 insertions, 17 deletions

diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index e0f62837c3f4..196970a4541f 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -278,8 +278,7 @@ void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio)
 
 /**
  * vmpressure_register_event() - Bind vmpressure notifications to an eventfd
- * @css:        css that is interested in vmpressure notifications
- * @cft:        cgroup control files handle
+ * @memcg:      memcg that is interested in vmpressure notifications
  * @eventfd:    eventfd context to link notifications with
  * @args:       event arguments (used to set up a pressure level threshold)
  *
@@ -289,15 +288,12 @@ void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio)
  * threshold (one of vmpressure_str_levels, i.e. "low", "medium", or
  * "critical").
  *
- * This function should not be used directly, just pass it to (struct
- * cftype).register_event, and then cgroup core will handle everything by
- * itself.
+ * To be used as memcg event method.
  */
-int vmpressure_register_event(struct cgroup_subsys_state *css,
-                              struct cftype *cft, struct eventfd_ctx *eventfd,
-                              const char *args)
+int vmpressure_register_event(struct mem_cgroup *memcg,
+                              struct eventfd_ctx *eventfd, const char *args)
 {
-        struct vmpressure *vmpr = css_to_vmpressure(css);
+        struct vmpressure *vmpr = memcg_to_vmpressure(memcg);
         struct vmpressure_event *ev;
         int level;
 
@@ -325,23 +321,19 @@ int vmpressure_register_event(struct cgroup_subsys_state *css,
 
 /**
  * vmpressure_unregister_event() - Unbind eventfd from vmpressure
- * @css:        css handle
- * @cft:        cgroup control files handle
+ * @memcg:      memcg handle
  * @eventfd:    eventfd context that was used to link vmpressure with the @cg
  *
  * This function does internal manipulations to detach the @eventfd from
  * the vmpressure notifications, and then frees internal resources
  * associated with the @eventfd (but the @eventfd itself is not freed).
  *
- * This function should not be used directly, just pass it to (struct
- * cftype).unregister_event, and then cgroup core will handle everything
- * by itself.
+ * To be used as memcg event method.
  */
-void vmpressure_unregister_event(struct cgroup_subsys_state *css,
-                                 struct cftype *cft,
+void vmpressure_unregister_event(struct mem_cgroup *memcg,
                                  struct eventfd_ctx *eventfd)
 {
-        struct vmpressure *vmpr = css_to_vmpressure(css);
+        struct vmpressure *vmpr = memcg_to_vmpressure(memcg);
         struct vmpressure_event *ev;
 
         mutex_lock(&vmpr->events_lock);