afs: Rename desc -> req in afs_fetch_data()

Rename the desc parameter to req in afs_fetch_data() for consistency with
other functions.
Signed-off-by: David Howells <dhowells@redhat.com>

fs/afs/file.c

@@ -223,7 +223,7 @@ static void afs_file_readpage_read_complete(struct page *page,
 /*
  * Fetch file data from the volume.
  */
-int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *desc)
+int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *req)
 {
 	struct afs_fs_cursor fc;
 	struct afs_status_cb *scb;
@@ -246,7 +246,7 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *de
 
 		while (afs_select_fileserver(&fc)) {
 			fc.cb_break = afs_calc_vnode_cb_break(vnode);
-			afs_fs_fetch_data(&fc, scb, desc);
+			afs_fs_fetch_data(&fc, scb, req);
 		}
 
 		afs_check_for_remote_deletion(&fc, vnode);
@@ -257,7 +257,7 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *de
 
 	if (ret == 0) {
 		afs_stat_v(vnode, n_fetches);
-		atomic_long_add(desc->actual_len,
+		atomic_long_add(req->actual_len,
 				&afs_v2net(vnode)->n_fetch_bytes);
 	}