FSYNC_RECLAIM
if (ap->a_flags & FSYNC_RECLAIM)
error = VOP_FSYNC(vp, cred, FSYNC_WAIT|FSYNC_RECLAIM, 0, 0);
if (ap->a_flags & FSYNC_RECLAIM) {
if ((ap->a_flags & FSYNC_RECLAIM) != 0 && ip->i_mode == 0)
KASSERT(!(ap->a_flags & FSYNC_RECLAIM && ip->i_state & IN_CLEANING));