22 static void fsnotify_final_destroy_group(struct fsnotify_group *group)  in fsnotify_final_destroy_group()  argument
24 	if (group->ops->free_group_priv)  in fsnotify_final_destroy_group()
25 		group->ops->free_group_priv(group);  in fsnotify_final_destroy_group()
27 	mem_cgroup_put(group->memcg);  in fsnotify_final_destroy_group()
28 	mutex_destroy(&group->mark_mutex);  in fsnotify_final_destroy_group()
30 	kfree(group);  in fsnotify_final_destroy_group()
37 void fsnotify_group_stop_queueing(struct fsnotify_group *group)  in fsnotify_group_stop_queueing()  argument
39 	spin_lock(&group->notification_lock);  in fsnotify_group_stop_queueing()
40 	group->shutdown = true;  in fsnotify_group_stop_queueing()
41 	spin_unlock(&group->notification_lock);  in fsnotify_group_stop_queueing()
50 void fsnotify_destroy_group(struct fsnotify_group *group)  in fsnotify_destroy_group()  argument
58 	fsnotify_group_stop_queueing(group);  in fsnotify_destroy_group()
61 	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_ANY);  in fsnotify_destroy_group()
68 	wait_event(group->notification_waitq, !atomic_read(&group->user_waits));  in fsnotify_destroy_group()
84 	fsnotify_flush_notify(group);  in fsnotify_destroy_group()
90 	if (group->overflow_event)  in fsnotify_destroy_group()
91 		group->ops->free_event(group, group->overflow_event);  in fsnotify_destroy_group()
93 	fsnotify_put_group(group);  in fsnotify_destroy_group()
99 void fsnotify_get_group(struct fsnotify_group *group)  in fsnotify_get_group()  argument
101 	refcount_inc(&group->refcnt);  in fsnotify_get_group()
107 void fsnotify_put_group(struct fsnotify_group *group)  in fsnotify_put_group()  argument
109 	if (refcount_dec_and_test(&group->refcnt))  in fsnotify_put_group()
110 		fsnotify_final_destroy_group(group);  in fsnotify_put_group()
119 	struct fsnotify_group *group;  in __fsnotify_alloc_group()  local
121 	group = kzalloc(sizeof(struct fsnotify_group), gfp);  in __fsnotify_alloc_group()
122 	if (!group)  in __fsnotify_alloc_group()
126 	refcount_set(&group->refcnt, 1);  in __fsnotify_alloc_group()
127 	atomic_set(&group->user_waits, 0);  in __fsnotify_alloc_group()
129 	spin_lock_init(&group->notification_lock);  in __fsnotify_alloc_group()
130 	INIT_LIST_HEAD(&group->notification_list);  in __fsnotify_alloc_group()
131 	init_waitqueue_head(&group->notification_waitq);  in __fsnotify_alloc_group()
132 	group->max_events = UINT_MAX;  in __fsnotify_alloc_group()
134 	mutex_init(&group->mark_mutex);  in __fsnotify_alloc_group()
135 	INIT_LIST_HEAD(&group->marks_list);  in __fsnotify_alloc_group()
137 	group->ops = ops;  in __fsnotify_alloc_group()
138 	group->flags = flags;  in __fsnotify_alloc_group()
148 		lockdep_set_class(&group->mark_mutex, &nofs_marks_lock);  in __fsnotify_alloc_group()
150 	return group;  in __fsnotify_alloc_group()
168 	struct fsnotify_group *group = file->private_data;  in fsnotify_fasync()  local
170 	return fasync_helper(fd, file, on, &group->fsn_fa) >= 0 ? 0 : -EIO;  in fsnotify_fasync()