Source of notification.c - linux-imx - PHYTEC BitBucket (Stash)

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queue:
    group->q_len++;
    list_add_tail(&event->list, list);
    spin_unlock(&group->notification_lock);
​
    wake_up(&group->notification_waitq);
    kill_fasync(&group->fsn_fa, SIGIO, POLL_IN);
    return ret;
}
​
void fsnotify_remove_queued_event(struct fsnotify_group *group,
                  struct fsnotify_event *event)
{
    assert_spin_locked(&group->notification_lock);
    /*
     * We need to init list head for the case of overflow event so that
     * check in fsnotify_add_event() works
     */
    list_del_init(&event->list);
    group->q_len--;
}
​
/*
 * Remove and return the first event from the notification list.  It is the
 * responsibility of the caller to destroy the obtained event
 */
struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group)
{
    struct fsnotify_event *event;
​
    assert_spin_locked(&group->notification_lock);
​
    pr_debug("%s: group=%p\n", __func__, group);
​
    event = list_first_entry(&group->notification_list,
                 struct fsnotify_event, list);
    /*
     * We need to init list head for the case of overflow event so that
     * check in fsnotify_add_event() works
     */
    list_del_init(&event->list);
    group->q_len--;
​
    fsnotify_remove_queued_event(group, event);
    return event;
}
​
/*
 * This will not remove the event, that must be done with
 * fsnotify_remove_first_event()
 */
struct fsnotify_event *fsnotify_peek_first_event(struct fsnotify_group *group)
{
    assert_spin_locked(&group->notification_lock);