btrfs: Convert extent_range_redirty_for_io() to use folios

This removes a call to __set_page_dirty_nobuffers().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs
Tested-by: David Howells <dhowells@redhat.com> # afs

fs/btrfs/extent_io.c

@@ -1507,17 +1507,17 @@ void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end)
 
 void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end)
 {
+	struct address_space *mapping = inode->i_mapping;
 	unsigned long index = start >> PAGE_SHIFT;
 	unsigned long end_index = end >> PAGE_SHIFT;
-	struct page *page;
+	struct folio *folio;
 
 	while (index <= end_index) {
-		page = find_get_page(inode->i_mapping, index);
-		BUG_ON(!page); /* Pages should be in the extent_io_tree */
-		__set_page_dirty_nobuffers(page);
-		account_page_redirty(page);
-		put_page(page);
-		index++;
+		folio = filemap_get_folio(mapping, index);
+		filemap_dirty_folio(mapping, folio);
+		folio_account_redirty(folio);
+		index += folio_nr_pages(folio);
+		folio_put(folio);
 	}
 }