580 	struct bio *comp_bio;  in btrfs_submit_compressed_read()  local
654 	comp_bio = compressed_bio_alloc(bdev, cur_disk_byte, GFP_NOFS);  in btrfs_submit_compressed_read()
655 	if (!comp_bio)  in btrfs_submit_compressed_read()
657 	comp_bio->bi_private = cb;  in btrfs_submit_compressed_read()
658 	comp_bio->bi_end_io = end_compressed_bio_read;  in btrfs_submit_compressed_read()
666 		if (comp_bio->bi_iter.bi_size)  in btrfs_submit_compressed_read()
669 							comp_bio, 0);  in btrfs_submit_compressed_read()
674 		if (ret || bio_add_page(comp_bio, page, PAGE_CACHE_SIZE, 0) <  in btrfs_submit_compressed_read()
676 			bio_get(comp_bio);  in btrfs_submit_compressed_read()
678 			ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio,  in btrfs_submit_compressed_read()
692 							comp_bio, sums);  in btrfs_submit_compressed_read()
695 			sums += DIV_ROUND_UP(comp_bio->bi_iter.bi_size,  in btrfs_submit_compressed_read()
698 			ret = btrfs_map_bio(root, READ, comp_bio,  in btrfs_submit_compressed_read()
701 				bio_endio(comp_bio, ret);  in btrfs_submit_compressed_read()
703 			bio_put(comp_bio);  in btrfs_submit_compressed_read()
705 			comp_bio = compressed_bio_alloc(bdev, cur_disk_byte,  in btrfs_submit_compressed_read()
707 			BUG_ON(!comp_bio);  in btrfs_submit_compressed_read()
708 			comp_bio->bi_private = cb;  in btrfs_submit_compressed_read()
709 			comp_bio->bi_end_io = end_compressed_bio_read;  in btrfs_submit_compressed_read()
711 			bio_add_page(comp_bio, page, PAGE_CACHE_SIZE, 0);  in btrfs_submit_compressed_read()
715 	bio_get(comp_bio);  in btrfs_submit_compressed_read()
717 	ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio,  in btrfs_submit_compressed_read()
722 		ret = btrfs_lookup_bio_sums(root, inode, comp_bio, sums);  in btrfs_submit_compressed_read()
726 	ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);  in btrfs_submit_compressed_read()
728 		bio_endio(comp_bio, ret);  in btrfs_submit_compressed_read()
730 	bio_put(comp_bio);  in btrfs_submit_compressed_read()