194 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
197 		return sh->qd_idx + 1;  in raid6_d0()
219 	if (idx == sh->qd_idx)  in raid6_idx_to_slot()
809 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
1356 		if (i == sh->qd_idx || i == sh->pd_idx ||  in set_syndrome_sources()
1375 	int qd_idx = sh->qd_idx;  in ops_run_compute6_1()  local
1401 	if (target == qd_idx) {  in ops_run_compute6_1()
1413 			if (i == target || i == qd_idx)  in ops_run_compute6_1()
1488 			int qd_idx = sh->qd_idx;  in ops_run_compute6_2()  local
1491 			if (target == qd_idx)  in ops_run_compute6_2()
1498 				if (i == data_target || i == qd_idx)  in ops_run_compute6_2()
1661 	int qd_idx = sh->qd_idx;  in ops_complete_reconstruct()  local
1677 		if (dev->written || i == pd_idx || i == qd_idx) {  in ops_complete_reconstruct()
1801 		if (sh->pd_idx == i || sh->qd_idx == i)  in ops_run_reconstruct6()
1809 		set_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in ops_run_reconstruct6()
1862 	int qd_idx = sh->qd_idx;  in ops_run_check_p()  local
1878 		if (i == pd_idx || i == qd_idx)  in ops_run_check_p()
2541 	int pd_idx, qd_idx;  in raid5_compute_sector()  local
2569 	pd_idx = qd_idx = -1;  in raid5_compute_sector()
2610 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
2613 				qd_idx = 0;  in raid5_compute_sector()
2619 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
2622 				qd_idx = 0;  in raid5_compute_sector()
2628 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
2633 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
2639 			qd_idx = 1;  in raid5_compute_sector()
2644 			qd_idx = data_disks + 1;  in raid5_compute_sector()
2652 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
2655 				qd_idx = 0;  in raid5_compute_sector()
2668 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
2671 				qd_idx = 0;  in raid5_compute_sector()
2680 			qd_idx = (pd_idx + raid_disks - 1) % raid_disks;  in raid5_compute_sector()
2690 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
2697 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
2703 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
2709 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
2715 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
2726 		sh->qd_idx = qd_idx;  in raid5_compute_sector()
2783 		if (i == sh->qd_idx)  in raid5_compute_blocknr()
2848 		|| sh2.qd_idx != sh->qd_idx) {  in raid5_compute_blocknr()
2860 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
2899 			(!(test_bit(R5_UPTODATE, &sh->dev[qd_idx].flags) ||  in schedule_reconstruction()
2900 			   test_bit(R5_Wantcompute, &sh->dev[qd_idx].flags))));  in schedule_reconstruction()
2904 			if (i == pd_idx || i == qd_idx)  in schedule_reconstruction()
2933 		int qd_idx = sh->qd_idx;  in schedule_reconstruction()  local
2934 		struct r5dev *dev = &sh->dev[qd_idx];  in schedule_reconstruction()
3342 		    s->failed_num[i] != sh->qd_idx &&  in need_this_block()
3518 		if (sh->qd_idx >= 0) {  in handle_stripe_clean_event()
3519 			clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
3520 			clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
3583 		if ((dev->towrite || i == sh->pd_idx || i == sh->qd_idx) &&  in handle_stripe_dirtying()
3594 		    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
3615 			if ((dev->towrite || i == sh->pd_idx || i == sh->qd_idx) &&  in handle_stripe_dirtying()
3641 			    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
3780 	int qd_idx = sh->qd_idx;  in handle_parity_checks6()  local
3864 			dev = &sh->dev[qd_idx];  in handle_parity_checks6()
3922 						&sh->dev[qd_idx].flags);  in handle_parity_checks6()
3923 					*target = qd_idx;  in handle_parity_checks6()
3950 		if (i != sh->pd_idx && i != sh->qd_idx) {  in handle_stripe_expansion()
3982 				    j != sh2->qd_idx &&  in handle_stripe_expansion()
4332 	       atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,  in handle_stripe()
4393 		BUG_ON(sh->qd_idx >= 0 &&  in handle_stripe()
4394 		       !test_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags) &&  in handle_stripe()
4395 		       !test_bit(R5_Discard, &sh->dev[sh->qd_idx].flags));  in handle_stripe()
4399 				(i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe()
4408 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&  in handle_stripe()
4424 	qdev = &sh->dev[sh->qd_idx];  in handle_stripe()
4425 	s.q_failed = (s.failed >= 1 && s.failed_num[0] == sh->qd_idx)  in handle_stripe()
4426 		|| (s.failed >= 2 && s.failed_num[1] == sh->qd_idx)  in handle_stripe()
5095 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5109 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5496 			    j == sh->qd_idx)  in reshape_request()