9p: Convert to release_folio

A straightforward conversion as it already works in terms of folios.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>

fs/9p/vfs_addr.c

@@ -100,29 +100,28 @@ const struct netfs_request_ops v9fs_req_ops = {
 };
 
 /**
- * v9fs_release_page - release the private state associated with a page
- * @page: The page to be released
+ * v9fs_release_folio - release the private state associated with a folio
+ * @folio: The folio to be released
  * @gfp: The caller's allocation restrictions
  *
- * Returns 1 if the page can be released, false otherwise.
+ * Returns true if the page can be released, false otherwise.
  */
 
-static int v9fs_release_page(struct page *page, gfp_t gfp)
+static bool v9fs_release_folio(struct folio *folio, gfp_t gfp)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = folio_inode(folio);
 
 	if (folio_test_private(folio))
-		return 0;
+		return false;
 #ifdef CONFIG_9P_FSCACHE
 	if (folio_test_fscache(folio)) {
 		if (current_is_kswapd() || !(gfp & __GFP_FS))
-			return 0;
+			return false;
 		folio_wait_fscache(folio);
 	}
 #endif
 	fscache_note_page_release(v9fs_inode_cookie(V9FS_I(inode)));
-	return 1;
+	return true;
 }
 
 static void v9fs_invalidate_folio(struct folio *folio, size_t offset,
@@ -342,7 +341,7 @@ const struct address_space_operations v9fs_addr_operations = {
 	.writepage = v9fs_vfs_writepage,
 	.write_begin = v9fs_write_begin,
 	.write_end = v9fs_write_end,
-	.releasepage = v9fs_release_page,
+	.release_folio = v9fs_release_folio,
 	.invalidate_folio = v9fs_invalidate_folio,
 	.launder_folio = v9fs_launder_folio,
 	.direct_IO = v9fs_direct_IO,