TMPFS_VNODE_ALLOCATING
if (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) {
node->tn_vpstate |= TMPFS_VNODE_ALLOCATING;
MPASS(node->tn_vpstate & TMPFS_VNODE_ALLOCATING);
node->tn_vpstate &= ~TMPFS_VNODE_ALLOCATING;
MPASS((node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0);
(node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) {