340 	struct extent_map *em;  in alloc_compressed_bio()  local
347 	em = btrfs_get_chunk_map(fs_info, disk_bytenr, fs_info->sectorsize);  in alloc_compressed_bio()
348 	if (IS_ERR(em)) {  in alloc_compressed_bio()
350 		return ERR_CAST(em);  in alloc_compressed_bio()
354 		bio_set_dev(bio, em->map_lookup->stripes[0].dev->bdev);  in alloc_compressed_bio()
356 	ret = btrfs_get_io_geometry(fs_info, em, btrfs_op(bio), disk_bytenr, &geom);  in alloc_compressed_bio()
357 	free_extent_map(em);  in alloc_compressed_bio()
523 	struct extent_map *em;  in add_ra_bio_pages()  local
599 		em = lookup_extent_mapping(em_tree, cur, page_end + 1 - cur);  in add_ra_bio_pages()
607 		if (!em || cur < em->start ||  in add_ra_bio_pages()
608 		    (cur + fs_info->sectorsize > extent_map_end(em)) ||  in add_ra_bio_pages()
609 		    (em->block_start >> 9) != cb->orig_bio->bi_iter.bi_sector) {  in add_ra_bio_pages()
610 			free_extent_map(em);  in add_ra_bio_pages()
616 		free_extent_map(em);  in add_ra_bio_pages()
628 		add_size = min(em->start + em->len, page_end + 1) - cur;  in add_ra_bio_pages()
674 	struct extent_map *em;  in btrfs_submit_compressed_read()  local
688 	em = lookup_extent_mapping(em_tree, file_offset, fs_info->sectorsize);  in btrfs_submit_compressed_read()
690 	if (!em) {  in btrfs_submit_compressed_read()
695 	ASSERT(em->compress_type != BTRFS_COMPRESS_NONE);  in btrfs_submit_compressed_read()
696 	compressed_len = em->block_len;  in btrfs_submit_compressed_read()
707 	cb->start = em->orig_start;  in btrfs_submit_compressed_read()
708 	em_len = em->len;  in btrfs_submit_compressed_read()
709 	em_start = em->start;  in btrfs_submit_compressed_read()
713 	cb->compress_type = em->compress_type;  in btrfs_submit_compressed_read()
716 	free_extent_map(em);  in btrfs_submit_compressed_read()
717 	em = NULL;  in btrfs_submit_compressed_read()
830 	free_extent_map(em);  in btrfs_submit_compressed_read()