182 	uint32_t *dbi;  member
486 #define tcmu_cmd_set_dbi(cmd, index) ((cmd)->dbi[(cmd)->dbi_cur++] = (index))
487 #define tcmu_cmd_get_dbi(cmd) ((cmd)->dbi[(cmd)->dbi_cur++])
495 		clear_bit(tcmu_cmd->dbi[i], udev->data_bitmap);  in tcmu_cmd_free_data()
503 	int ret, dbi;  in tcmu_get_empty_block()  local
505 	dbi = find_first_zero_bit(udev->data_bitmap, udev->dbi_thresh);  in tcmu_get_empty_block()
506 	if (dbi == udev->dbi_thresh)  in tcmu_get_empty_block()
509 	page = radix_tree_lookup(&udev->data_blocks, dbi);  in tcmu_get_empty_block()
520 		ret = radix_tree_insert(&udev->data_blocks, dbi, page);  in tcmu_get_empty_block()
525 	if (dbi > udev->dbi_max)  in tcmu_get_empty_block()
526 		udev->dbi_max = dbi;  in tcmu_get_empty_block()
528 	set_bit(dbi, udev->data_bitmap);  in tcmu_get_empty_block()
529 	tcmu_cmd_set_dbi(tcmu_cmd, dbi);  in tcmu_get_empty_block()
531 	if (dbi != prev_dbi + 1)  in tcmu_get_empty_block()
534 	return dbi;  in tcmu_get_empty_block()
545 	/* start value of dbi + 1 must not be a valid dbi */  in tcmu_get_empty_blocks()
546 	int dbi = -2;  in tcmu_get_empty_blocks()  local
550 		dbi = tcmu_get_empty_block(udev, tcmu_cmd, dbi, &iov_cnt);  in tcmu_get_empty_blocks()
551 		if (dbi < 0)  in tcmu_get_empty_blocks()
558 tcmu_get_block_page(struct tcmu_dev *udev, uint32_t dbi)  in tcmu_get_block_page()  argument
560 	return radix_tree_lookup(&udev->data_blocks, dbi);  in tcmu_get_block_page()
567 	kfree(tcmu_cmd->dbi);  in tcmu_free_cmd()
591 	/* Get the next dbi */  in new_block_to_iov()
592 	int dbi = tcmu_cmd_get_dbi(cmd);  in new_block_to_iov()  local
601 	if (dbi != prev_dbi + 1) {  in new_block_to_iov()
602 		/* dbi is not next to previous dbi, so start new iov */  in new_block_to_iov()
607 				(udev->data_off + dbi * DATA_BLOCK_SIZE);  in new_block_to_iov()
611 	return dbi;  in new_block_to_iov()
617 	/* start value of dbi + 1 must not be a valid dbi */  in tcmu_setup_iovs()
618 	int dbi = -2;  in tcmu_setup_iovs()  local
622 		dbi = new_block_to_iov(udev, cmd, iov, dbi, &data_length);  in tcmu_setup_iovs()
640 	tcmu_cmd->dbi = kcalloc(tcmu_cmd->dbi_cnt, sizeof(uint32_t),  in tcmu_alloc_cmd()
642 	if (!tcmu_cmd->dbi) {  in tcmu_alloc_cmd()
695 	/* start value of dbi + 1 must not be a valid dbi */  in scatter_data_area()
696 	int i, dbi = -2;  in scatter_data_area()  local
714 				/* get next dbi and add to IOVs */  in scatter_data_area()
715 				dbi = new_block_to_iov(udev, tcmu_cmd, iov, dbi,  in scatter_data_area()
717 				page = tcmu_get_block_page(udev, dbi);  in scatter_data_area()
744 	int i, dbi;  in gather_data_area()  local
779 				dbi = tcmu_cmd_get_dbi(cmd);  in gather_data_area()
780 				page = tcmu_get_block_page(udev, dbi);  in gather_data_area()
1668 static struct page *tcmu_try_get_block_page(struct tcmu_dev *udev, uint32_t dbi)  in tcmu_try_get_block_page()  argument
1673 	page = tcmu_get_block_page(udev, dbi);  in tcmu_try_get_block_page()
1683 	pr_err("Invalid addr to data block mapping  (dbi %u) on device %s\n",  in tcmu_try_get_block_page()
1684 	       dbi, udev->name);  in tcmu_try_get_block_page()
1714 		uint32_t dbi;  in tcmu_vma_fault()  local
1717 		dbi = (offset - udev->data_off) / DATA_BLOCK_SIZE;  in tcmu_vma_fault()
1718 		page = tcmu_try_get_block_page(udev, dbi);  in tcmu_vma_fault()