USER_LOCK_BLOCKED
if (ip->ip_lockres.l_flags & USER_LOCK_BLOCKED)
lockres->l_flags &= ~USER_LOCK_BLOCKED;
if (!(lockres->l_flags & USER_LOCK_BLOCKED))
lockres->l_flags |= USER_LOCK_BLOCKED;
if (lockres->l_flags & USER_LOCK_BLOCKED)
if (!(lockres->l_flags & USER_LOCK_BLOCKED)) {
BUG_ON(!(lockres->l_flags & USER_LOCK_BLOCKED));
if ((lockres->l_flags & USER_LOCK_BLOCKED) &&
!user_check_wait_flag(lockres, USER_LOCK_BLOCKED));