142 	struct fsnotify_group *group = file->private_data;  in inotify_poll()  local
145 	poll_wait(file, &group->notification_waitq, wait);  in inotify_poll()
146 	spin_lock(&group->notification_lock);  in inotify_poll()
147 	if (!fsnotify_notify_queue_is_empty(group))  in inotify_poll()
149 	spin_unlock(&group->notification_lock);  in inotify_poll()
171 static struct fsnotify_event *get_one_event(struct fsnotify_group *group,  in get_one_event()  argument
177 	event = fsnotify_peek_first_event(group);  in get_one_event()
181 	pr_debug("%s: group=%p event=%p\n", __func__, group, event);  in get_one_event()
189 	fsnotify_remove_first_event(group);  in get_one_event()
200 static ssize_t copy_event_to_user(struct fsnotify_group *group,  in copy_event_to_user()  argument
210 	pr_debug("%s: group=%p event=%p\n", __func__, group, fsn_event);  in copy_event_to_user()
253 	struct fsnotify_group *group;  in inotify_read()  local
260 	group = file->private_data;  in inotify_read()
262 	add_wait_queue(&group->notification_waitq, &wait);  in inotify_read()
264 		spin_lock(&group->notification_lock);  in inotify_read()
265 		kevent = get_one_event(group, count);  in inotify_read()
266 		spin_unlock(&group->notification_lock);  in inotify_read()
268 		pr_debug("%s: group=%p kevent=%p\n", __func__, group, kevent);  in inotify_read()
274 			ret = copy_event_to_user(group, kevent, buf);  in inotify_read()
275 			fsnotify_destroy_event(group, kevent);  in inotify_read()
295 	remove_wait_queue(&group->notification_waitq, &wait);  in inotify_read()
304 	struct fsnotify_group *group = file->private_data;  in inotify_release()  local
306 	pr_debug("%s: group=%p\n", __func__, group);  in inotify_release()
309 	fsnotify_destroy_group(group);  in inotify_release()
317 	struct fsnotify_group *group;  in inotify_ioctl()  local
323 	group = file->private_data;  in inotify_ioctl()
326 	pr_debug("%s: group=%p cmd=%u\n", __func__, group, cmd);  in inotify_ioctl()
330 		spin_lock(&group->notification_lock);  in inotify_ioctl()
331 		list_for_each_entry(fsn_event, &group->notification_list,  in inotify_ioctl()
336 		spin_unlock(&group->notification_lock);  in inotify_ioctl()
345 			data = &group->inotify_data;  in inotify_ioctl()
415 static struct inotify_inode_mark *inotify_idr_find_locked(struct fsnotify_group *group,  in inotify_idr_find_locked()  argument
418 	struct idr *idr = &group->inotify_data.idr;  in inotify_idr_find_locked()
419 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_idr_find_locked()
436 static struct inotify_inode_mark *inotify_idr_find(struct fsnotify_group *group,  in inotify_idr_find()  argument
440 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_idr_find()
443 	i_mark = inotify_idr_find_locked(group, wd);  in inotify_idr_find()
453 static void inotify_remove_from_idr(struct fsnotify_group *group,  in inotify_remove_from_idr()  argument
456 	struct idr *idr = &group->inotify_data.idr;  in inotify_remove_from_idr()
457 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_remove_from_idr()
470 			__func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
475 	found_i_mark = inotify_idr_find_locked(group, wd);  in inotify_remove_from_idr()
478 			__func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
491 			i_mark->wd, i_mark->fsn_mark.group, found_i_mark,  in inotify_remove_from_idr()
492 			found_i_mark->wd, found_i_mark->fsn_mark.group);  in inotify_remove_from_idr()
502 			 __func__, i_mark, i_mark->wd, i_mark->fsn_mark.group);  in inotify_remove_from_idr()
522 				    struct fsnotify_group *group)  in inotify_ignored_and_remove_idr()  argument
532 	inotify_remove_from_idr(group, i_mark);  in inotify_ignored_and_remove_idr()
534 	dec_inotify_watches(group->inotify_data.ucounts);  in inotify_ignored_and_remove_idr()
537 static int inotify_update_existing_watch(struct fsnotify_group *group,  in inotify_update_existing_watch()  argument
548 	fsn_mark = fsnotify_find_mark(&inode->i_fsnotify_marks, group);  in inotify_update_existing_watch()
591 static int inotify_new_watch(struct fsnotify_group *group,  in inotify_new_watch()  argument
597 	struct idr *idr = &group->inotify_data.idr;  in inotify_new_watch()
598 	spinlock_t *idr_lock = &group->inotify_data.idr_lock;  in inotify_new_watch()
604 	fsnotify_init_mark(&tmp_i_mark->fsn_mark, group);  in inotify_new_watch()
614 	if (!inc_inotify_watches(group->inotify_data.ucounts)) {  in inotify_new_watch()
615 		inotify_remove_from_idr(group, tmp_i_mark);  in inotify_new_watch()
624 		inotify_remove_from_idr(group, tmp_i_mark);  in inotify_new_watch()
639 static int inotify_update_watch(struct fsnotify_group *group, struct inode *inode, u32 arg)  in inotify_update_watch()  argument
643 	fsnotify_group_lock(group);  in inotify_update_watch()
645 	ret = inotify_update_existing_watch(group, inode, arg);  in inotify_update_watch()
648 		ret = inotify_new_watch(group, inode, arg);  in inotify_update_watch()
649 	fsnotify_group_unlock(group);  in inotify_update_watch()
656 	struct fsnotify_group *group;  in inotify_new_group()  local
659 	group = fsnotify_alloc_group(&inotify_fsnotify_ops,  in inotify_new_group()
661 	if (IS_ERR(group))  in inotify_new_group()
662 		return group;  in inotify_new_group()
666 		fsnotify_destroy_group(group);  in inotify_new_group()
669 	group->overflow_event = &oevent->fse;  in inotify_new_group()
670 	fsnotify_init_event(group->overflow_event);  in inotify_new_group()
676 	group->max_events = max_events;  in inotify_new_group()
677 	group->memcg = get_mem_cgroup_from_mm(current->mm);  in inotify_new_group()
679 	spin_lock_init(&group->inotify_data.idr_lock);  in inotify_new_group()
680 	idr_init(&group->inotify_data.idr);  in inotify_new_group()
681 	group->inotify_data.ucounts = inc_ucount(current_user_ns(),  in inotify_new_group()
685 	if (!group->inotify_data.ucounts) {  in inotify_new_group()
686 		fsnotify_destroy_group(group);  in inotify_new_group()
690 	return group;  in inotify_new_group()
697 	struct fsnotify_group *group;  in do_inotify_init()  local
708 	group = inotify_new_group(inotify_max_queued_events);  in do_inotify_init()
709 	if (IS_ERR(group))  in do_inotify_init()
710 		return PTR_ERR(group);  in do_inotify_init()
712 	ret = anon_inode_getfd("inotify", &inotify_fops, group,  in do_inotify_init()
715 		fsnotify_destroy_group(group);  in do_inotify_init()
733 	struct fsnotify_group *group;  in SYSCALL_DEFINE3()  local
784 	group = f.file->private_data;  in SYSCALL_DEFINE3()
787 	ret = inotify_update_watch(group, inode, mask);  in SYSCALL_DEFINE3()
796 	struct fsnotify_group *group;  in SYSCALL_DEFINE2()  local
809 	group = f.file->private_data;  in SYSCALL_DEFINE2()
811 	i_mark = inotify_idr_find(group, wd);  in SYSCALL_DEFINE2()
817 	fsnotify_destroy_mark(&i_mark->fsn_mark, group);  in SYSCALL_DEFINE2()