AFS_VNODE_LOCK_EXTENDING
afs_set_lock_state(vnode, AFS_VNODE_LOCK_EXTENDING);
if (vnode->lock_state != AFS_VNODE_LOCK_EXTENDING)
vnode->lock_state == AFS_VNODE_LOCK_EXTENDING)) {
EM(AFS_VNODE_LOCK_EXTENDING, "EXTENDING") \