141 	struct fsnotify_group *group = file->private_data;  in inotify_poll()  local
144 	poll_wait(file, &group->notification_waitq, wait);  in inotify_poll()
145 	spin_lock(&group->notification_lock);  in inotify_poll()
146 	if (!fsnotify_notify_queue_is_empty(group))  in inotify_poll()
148 	spin_unlock(&group->notification_lock);  in inotify_poll()
170 static struct fsnotify_event *get_one_event(struct fsnotify_group *group,  in get_one_event()  argument
176 	event = fsnotify_peek_first_event(group);  in get_one_event()
180 	pr_debug("%s: group=%p event=%p\n", __func__, group, event);  in get_one_event()
188 	fsnotify_remove_first_event(group);  in get_one_event()
199 static ssize_t copy_event_to_user(struct fsnotify_group *group,  in copy_event_to_user()  argument
209 	pr_debug("%s: group=%p event=%p\n", __func__, group, fsn_event);  in copy_event_to_user()
252 	struct fsnotify_group *group;  in inotify_read()  local
259 	group = file->private_data;  in inotify_read()
261 	add_wait_queue(&group->notification_waitq, &wait);  in inotify_read()
263 		spin_lock(&group->notification_lock);  in inotify_read()
264 		kevent = get_one_event(group, count);  in inotify_read()
265 		spin_unlock(&group->notification_lock);  in inotify_read()
267 		pr_debug("%s: group=%p kevent=%p\n", __func__, group, kevent);  in inotify_read()
273 			ret = copy_event_to_user(group, kevent, buf);  in inotify_read()
274 			fsnotify_destroy_event(group, kevent);  in inotify_read()
294 	remove_wait_queue(&group->notification_waitq, &wait);  in inotify_read()
303 	struct fsnotify_group *group = file->private_data;  in inotify_release()  local
305 	pr_debug("%s: group=%p\n", __func__, group);  in inotify_release()
308 	fsnotify_destroy_group(group);  in inotify_release()
316 	struct fsnotify_group *group;  in inotify_ioctl()  local
322 	group = file->private_data;  in inotify_ioctl()
325 	pr_debug("%s: group=%p cmd=%u\n", __func__, group, cmd);  in inotify_ioctl()
329 		spin_lock(&group->notification_lock);  in inotify_ioctl()
330 		list_for_each_entry(fsn_event, &group->notification_list,  in inotify_ioctl()
335 		spin_unlock(&group->notification_lock);  in inotify_ioctl()
344 			data = &group->inotify_data;  in inotify_ioctl()
414 static struct inotify_inode_mark *inotify_idr_find_locked(struct fsnotify_group *group,  in inotify_idr_find_locked()  argument
417 	struct idr *idr = &group->inotify_data.idr;  in inotify_idr_find_locked()
418 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_idr_find_locked()
435 static struct inotify_inode_mark *inotify_idr_find(struct fsnotify_group *group,  in inotify_idr_find()  argument
439 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_idr_find()
442 	i_mark = inotify_idr_find_locked(group, wd);  in inotify_idr_find()
452 static void inotify_remove_from_idr(struct fsnotify_group *group,  in inotify_remove_from_idr()  argument
455 	struct idr *idr = &group->inotify_data.idr;  in inotify_remove_from_idr()
456 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_remove_from_idr()
469 			__func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
474 	found_i_mark = inotify_idr_find_locked(group, wd);  in inotify_remove_from_idr()
477 			__func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
490 			i_mark->wd, i_mark->fsn_mark.group, found_i_mark,  in inotify_remove_from_idr()
491 			found_i_mark->wd, found_i_mark->fsn_mark.group);  in inotify_remove_from_idr()
501 			 __func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
521 				    struct fsnotify_group *group)  in inotify_ignored_and_remove_idr()  argument
531 	inotify_remove_from_idr(group, i_mark);  in inotify_ignored_and_remove_idr()
533 	dec_inotify_watches(group->inotify_data.ucounts);  in inotify_ignored_and_remove_idr()
536 static int inotify_update_existing_watch(struct fsnotify_group *group,  in inotify_update_existing_watch()  argument
547 	fsn_mark = fsnotify_find_inode_mark(inode, group);  in inotify_update_existing_watch()
590 static int inotify_new_watch(struct fsnotify_group *group,  in inotify_new_watch()  argument
596 	struct idr *idr = &group->inotify_data.idr;  in inotify_new_watch()
597 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_new_watch()
603 	fsnotify_init_mark(&tmp_i_mark->fsn_mark, group);  in inotify_new_watch()
613 	if (!inc_inotify_watches(group->inotify_data.ucounts)) {  in inotify_new_watch()
614 		inotify_remove_from_idr(group, tmp_i_mark);  in inotify_new_watch()
623 		inotify_remove_from_idr(group, tmp_i_mark);  in inotify_new_watch()
638 static int inotify_update_watch(struct fsnotify_group *group, struct inode *inode, u32 arg)  in inotify_update_watch()  argument
642 	fsnotify_group_lock(group);  in inotify_update_watch()
644 	ret = inotify_update_existing_watch(group, inode, arg);  in inotify_update_watch()
647 		ret = inotify_new_watch(group, inode, arg);  in inotify_update_watch()
648 	fsnotify_group_unlock(group);  in inotify_update_watch()
655 	struct fsnotify_group *group;  in inotify_new_group()  local
658 	group = fsnotify_alloc_group(&inotify_fsnotify_ops,  in inotify_new_group()
660 	if (IS_ERR(group))  in inotify_new_group()
661 		return group;  in inotify_new_group()
665 		fsnotify_destroy_group(group);  in inotify_new_group()
668 	group->overflow_event = &oevent->fse;  in inotify_new_group()
669 	fsnotify_init_event(group->overflow_event);  in inotify_new_group()
675 	group->max_events = max_events;  in inotify_new_group()
676 	group->memcg = get_mem_cgroup_from_mm(current->mm);  in inotify_new_group()
678 	spin_lock_init(&group->inotify_data.idr_lock);  in inotify_new_group()
679 	idr_init(&group->inotify_data.idr);  in inotify_new_group()
680 	group->inotify_data.ucounts = inc_ucount(current_user_ns(),  in inotify_new_group()
684 	if (!group->inotify_data.ucounts) {  in inotify_new_group()
685 		fsnotify_destroy_group(group);  in inotify_new_group()
689 	return group;  in inotify_new_group()
696 	struct fsnotify_group *group;  in do_inotify_init()  local
707 	group = inotify_new_group(inotify_max_queued_events);  in do_inotify_init()
708 	if (IS_ERR(group))  in do_inotify_init()
709 		return PTR_ERR(group);  in do_inotify_init()
711 	ret = anon_inode_getfd("inotify", &inotify_fops, group,  in do_inotify_init()
714 		fsnotify_destroy_group(group);  in do_inotify_init()
732 	struct fsnotify_group *group;  in SYSCALL_DEFINE3()  local
783 	group = fd_file(f)->private_data;  in SYSCALL_DEFINE3()
786 	ret = inotify_update_watch(group, inode, mask);  in SYSCALL_DEFINE3()
795 	struct fsnotify_group *group;  in SYSCALL_DEFINE2()  local
808 	group = fd_file(f)->private_data;  in SYSCALL_DEFINE2()
810 	i_mark = inotify_idr_find(group, wd);  in SYSCALL_DEFINE2()
816 	fsnotify_destroy_mark(&i_mark->fsn_mark, group);  in SYSCALL_DEFINE2()