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()
29 	kfree(group);  in fsnotify_final_destroy_group()
36 void fsnotify_group_stop_queueing(struct fsnotify_group *group)  in fsnotify_group_stop_queueing()  argument
38 	spin_lock(&group->notification_lock);  in fsnotify_group_stop_queueing()
39 	group->shutdown = true;  in fsnotify_group_stop_queueing()
40 	spin_unlock(&group->notification_lock);  in fsnotify_group_stop_queueing()
49 void fsnotify_destroy_group(struct fsnotify_group *group)  in fsnotify_destroy_group()  argument
57 	fsnotify_group_stop_queueing(group);  in fsnotify_destroy_group()
60 	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_ALL_TYPES_MASK);  in fsnotify_destroy_group()
67 	wait_event(group->notification_waitq, !atomic_read(&group->user_waits));  in fsnotify_destroy_group()
83 	fsnotify_flush_notify(group);  in fsnotify_destroy_group()
89 	if (group->overflow_event)  in fsnotify_destroy_group()
90 		group->ops->free_event(group->overflow_event);  in fsnotify_destroy_group()
92 	fsnotify_put_group(group);  in fsnotify_destroy_group()
98 void fsnotify_get_group(struct fsnotify_group *group)  in fsnotify_get_group()  argument
100 	refcount_inc(&group->refcnt);  in fsnotify_get_group()
106 void fsnotify_put_group(struct fsnotify_group *group)  in fsnotify_put_group()  argument
108 	if (refcount_dec_and_test(&group->refcnt))  in fsnotify_put_group()
109 		fsnotify_final_destroy_group(group);  in fsnotify_put_group()
118 	struct fsnotify_group *group;  in fsnotify_alloc_group()  local
120 	group = kzalloc(sizeof(struct fsnotify_group), GFP_KERNEL);  in fsnotify_alloc_group()
121 	if (!group)  in fsnotify_alloc_group()
125 	refcount_set(&group->refcnt, 1);  in fsnotify_alloc_group()
126 	atomic_set(&group->num_marks, 0);  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()
139 	return group;  in fsnotify_alloc_group()
145 	struct fsnotify_group *group = file->private_data;  in fsnotify_fasync()  local
147 	return fasync_helper(fd, file, on, &group->fsn_fa) >= 0 ? 0 : -EIO;  in fsnotify_fasync()