static int
iomap_writepage_map(struct iomap_writepage_ctx *wpc,
		struct writeback_control *wbc, struct inode *inode,
		struct folio *folio, u64 end_pos)
static int iomap_writepage_map(struct iomap_writepage_ctx *wpc,
		struct writeback_control *wbc, struct folio *folio)