NFS: Update the flexfilelayout driver to use xdr_set_scratch_folio()

Signed-off-by: Anna Schumaker <[e-mail]>

fs/nfs/flexfilelayout/flexfilelayout.c

···
 	struct nfs4_ff_layout_segment *fls = NULL;
 	struct xdr_stream stream;
 	struct xdr_buf buf;
-	struct page *scratch;
+	struct folio *scratch;
 	u64 stripe_unit;
 	u32 mirror_array_cnt;
 	__be32 *p;
 	int i, rc;
 
 	dprintk("--> %s\n", __func__);
-	scratch = alloc_page(gfp_flags);
+	scratch = folio_alloc(gfp_flags, 0);
 	if (!scratch)
 		return ERR_PTR(-ENOMEM);
 
 	xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages,
 			      lgr->layoutp->len);
-	xdr_set_scratch_page(&stream, scratch);
+	xdr_set_scratch_folio(&stream, scratch);
 
 	/* stripe unit and mirror_array_cnt */
 	rc = -EIO;
···
 	ret = &fls->generic_hdr;
 	dprintk("<-- %s (success)\n", __func__);
 out_free_page:
-	__free_page(scratch);
+	folio_put(scratch);
 	return ret;
 out_err_free:
 	_ff_layout_free_lseg(fls);

fs/nfs/flexfilelayout/flexfilelayoutdev.c

···
 {
 	struct xdr_stream stream;
 	struct xdr_buf buf;
-	struct page *scratch;
+	struct folio *scratch;
 	struct list_head dsaddrs;
 	struct nfs4_pnfs_ds_addr *da;
 	struct nfs4_ff_layout_ds *new_ds = NULL;
···
 	int i, ret = -ENOMEM;
 
 	/* set up xdr stream */
-	scratch = alloc_page(gfp_flags);
+	scratch = folio_alloc(gfp_flags, 0);
 	if (!scratch)
 		goto out_err;
 
···
 	INIT_LIST_HEAD(&dsaddrs);
 
 	xdr_init_decode_pages(&stream, &buf, pdev->pages, pdev->pglen);
-	xdr_set_scratch_page(&stream, scratch);
+	xdr_set_scratch_folio(&stream, scratch);
 
 	/* multipath count */
 	p = xdr_inline_decode(&stream, 4);
···
 		kfree(da);
 	}
 
-	__free_page(scratch);
+	folio_put(scratch);
 	return new_ds;
 
 out_err_drain_dsaddrs:
···
 
 	kfree(ds_versions);
 out_scratch:
-	__free_page(scratch);
+	folio_put(scratch);
 out_err:
 	kfree(new_ds);