btrfs: subpage: fix error handling in end_bio_subpage_eb_writepage

Call btrfs_page_clear_uptodate instead of ClearPageUptodate to properly
manage the uptodate bit for the subpage case.
Reported-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/extent_io.c

@@ -1915,7 +1915,8 @@ static void end_bio_subpage_eb_writepage(struct btrfs_bio *bbio)
 
 			if (bio->bi_status ||
 			    test_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags)) {
-				ClearPageUptodate(page);
+				btrfs_page_clear_uptodate(fs_info, page,
+							  eb->start, eb->len);
 				set_btree_ioerr(page, eb);
 			}