Is a grant or denial of interim attorney's fees an appealable order?

We have held that the grant or denial of interim attorney's fees pursuant to a federal statute is not an appealable final order under 28 U.S.C. 1291. See In re Yermakov, 718 F.2d 1465 (9th Cir.1983). We have also noted that an order where the district court explicitly provided for revision of the fee amount at the conclusion of the litigation, did not dispose of the issue of attorneys' fees and therefore was not a final appealable order. See Rosenfeld v. U.S., 859 F.2d 717 (9th Cir.1988).