Function vnode_destroy_vobject

freebsd/vm/vnode_pager.c:190–229

}

void
vnode_destroy_vobject(struct vnode *vp)
{
	struct vm_object *obj;

	obj = vp->v_object;
	if (obj == NULL || obj->handle != vp)
		return;
	ASSERT_VOP_ELOCKED(vp, "vnode_destroy_vobject");
	VM_OBJECT_WLOCK(obj);
	MPASS(obj->type == OBJT_VNODE);
	umtx_shm_object_terminated(obj);
	if (obj->ref_count == 0) {
		KASSERT((obj->flags & OBJ_DEAD) == 0,
		   ("vnode_destroy_vobject: Terminating dead object"));
		vm_object_set_flag(obj, OBJ_DEAD);

		/*
		 * Clean pages and flush buffers.
		 */
		vm_object_page_clean(obj, 0, 0, OBJPC_SYNC);
		VM_OBJECT_WUNLOCK(obj);

		vinvalbuf(vp, V_SAVE, 0, 0);

		BO_LOCK(&vp->v_bufobj);
		vp->v_bufobj.bo_flag |= BO_DEAD;
		BO_UNLOCK(&vp->v_bufobj);

		VM_OBJECT_WLOCK(obj);
		vm_object_terminate(obj);
	} else {
		/*
		 * Woe to the process that tries to page now :-).
		 */
		vm_pager_deallocate(obj);
		VM_OBJECT_WUNLOCK(obj);
	}
	KASSERT(vp->v_object == NULL, ("vp %p obj %p", vp, vp->v_object));
}

/*
 * Allocate (or lookup) pager for a vnode.