187 	uint32_t *dbi;  member
492 #define tcmu_cmd_set_dbi(cmd, index) ((cmd)->dbi[(cmd)->dbi_cur++] = (index))
493 #define tcmu_cmd_get_dbi(cmd) ((cmd)->dbi[(cmd)->dbi_cur++])
501 		clear_bit(tcmu_cmd->dbi[i], udev->data_bitmap);  in tcmu_cmd_free_data()
510 	int i, cnt, dbi, dpi;  in tcmu_get_empty_block()  local
513 	dbi = find_first_zero_bit(udev->data_bitmap, udev->dbi_thresh);  in tcmu_get_empty_block()
514 	if (dbi == udev->dbi_thresh)  in tcmu_get_empty_block()
517 	dpi = dbi * udev->data_pages_per_blk;  in tcmu_get_empty_block()
540 	if (i && dbi > udev->dbi_max)  in tcmu_get_empty_block()
541 		udev->dbi_max = dbi;  in tcmu_get_empty_block()
543 	set_bit(dbi, udev->data_bitmap);  in tcmu_get_empty_block()
544 	tcmu_cmd_set_dbi(tcmu_cmd, dbi);  in tcmu_get_empty_block()
546 	if (dbi != prev_dbi + 1)  in tcmu_get_empty_block()
549 	return i == page_cnt ? dbi : -1;  in tcmu_get_empty_block()
555 	/* start value of dbi + 1 must not be a valid dbi */  in tcmu_get_empty_blocks()
556 	int dbi = -2;  in tcmu_get_empty_blocks()  local
562 		dbi = tcmu_get_empty_block(udev, tcmu_cmd, dbi, blk_data_len,  in tcmu_get_empty_blocks()
564 		if (dbi < 0)  in tcmu_get_empty_blocks()
572 	kfree(tcmu_cmd->dbi);  in tcmu_free_cmd()
597 	/* Get the next dbi */  in new_block_to_iov()
598 	int dbi = tcmu_cmd_get_dbi(cmd);  in new_block_to_iov()  local
607 	if (dbi != prev_dbi + 1) {  in new_block_to_iov()
608 		/* dbi is not next to previous dbi, so start new iov */  in new_block_to_iov()
613 				   (udev->data_off + dbi * udev->data_blk_size);  in new_block_to_iov()
617 	return dbi;  in new_block_to_iov()
623 	/* start value of dbi + 1 must not be a valid dbi */  in tcmu_setup_iovs()
624 	int dbi = -2;  in tcmu_setup_iovs()  local
628 		dbi = new_block_to_iov(udev, cmd, iov, dbi, data_length);  in tcmu_setup_iovs()
646 	tcmu_cmd->dbi = kcalloc(tcmu_cmd->dbi_cnt, sizeof(uint32_t),  in tcmu_alloc_cmd()
648 	if (!tcmu_cmd->dbi) {  in tcmu_alloc_cmd()
705 	/* start value of dbi + 1 must not be a valid dbi */  in tcmu_copy_data()
706 	int dbi = -2;  in tcmu_copy_data()  local
722 			dbi = new_block_to_iov(udev, tcmu_cmd, iov, dbi,  in tcmu_copy_data()
725 			dbi = tcmu_cmd_get_dbi(tcmu_cmd);  in tcmu_copy_data()
731 		dpi = dbi * udev->data_pages_per_blk;  in tcmu_copy_data()