rem: PRINT(("inc_vnode_ref_count: vnode 0x%p, ref now %d\n", vnode, vnode->ref_count));
add: PRINT(("inc_vnode_ref_count: vnode %p, ref now %ld\n", vnode, vnode->ref_count));
context: inc_vnode_ref_count(struct vnode *vnode){	atomic_add(&vnode->ref_count, 1);	PRINT(("inc_vnode_ref_count: vnode 0x%p, ref now %d\n", vnode, vnode->ref_count));	return 0;}