118 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
121 		return sh->qd_idx + 1;  in raid6_d0()
143 	if (idx == sh->qd_idx)  in raid6_idx_to_slot()
870 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
1566 		if (i == sh->qd_idx || i == sh->pd_idx ||  in set_syndrome_sources()
1598 	int qd_idx = sh->qd_idx;  in ops_run_compute6_1()  local
1626 	if (target == qd_idx) {  in ops_run_compute6_1()
1639 			if (i == target || i == qd_idx)  in ops_run_compute6_1()
1722 			int qd_idx = sh->qd_idx;  in ops_run_compute6_2()  local
1725 			if (target == qd_idx)  in ops_run_compute6_2()
1732 				if (i == data_target || i == qd_idx)  in ops_run_compute6_2()
1931 	int qd_idx = sh->qd_idx;  in ops_complete_reconstruct()  local
1947 		if (dev->written || i == pd_idx || i == qd_idx) {  in ops_complete_reconstruct()
2087 		if (sh->pd_idx == i || sh->qd_idx == i)  in ops_run_reconstruct6()
2095 		set_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in ops_run_reconstruct6()
2150 	int qd_idx = sh->qd_idx;  in ops_run_check_p()  local
2170 		if (i == pd_idx || i == qd_idx)  in ops_run_check_p()
2769 			if (sh->qd_idx >= 0 && sh->pd_idx == i)  in raid5_end_read_request()
2921 	int pd_idx, qd_idx;  in raid5_compute_sector()  local
2949 	pd_idx = qd_idx = -1;  in raid5_compute_sector()
2990 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
2993 				qd_idx = 0;  in raid5_compute_sector()
2999 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3002 				qd_idx = 0;  in raid5_compute_sector()
3008 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3013 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3019 			qd_idx = 1;  in raid5_compute_sector()
3024 			qd_idx = data_disks + 1;  in raid5_compute_sector()
3032 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3035 				qd_idx = 0;  in raid5_compute_sector()
3048 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3051 				qd_idx = 0;  in raid5_compute_sector()
3060 			qd_idx = (pd_idx + raid_disks - 1) % raid_disks;  in raid5_compute_sector()
3070 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3077 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3083 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3089 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3095 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3106 		sh->qd_idx = qd_idx;  in raid5_compute_sector()
3163 		if (i == sh->qd_idx)  in raid5_compute_blocknr()
3228 		|| sh2.qd_idx != sh->qd_idx) {  in raid5_compute_blocknr()
3296 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
3345 			(!(test_bit(R5_UPTODATE, &sh->dev[qd_idx].flags) ||  in schedule_reconstruction()
3346 			   test_bit(R5_Wantcompute, &sh->dev[qd_idx].flags))));  in schedule_reconstruction()
3350 			if (i == pd_idx || i == qd_idx)  in schedule_reconstruction()
3382 		int qd_idx = sh->qd_idx;  in schedule_reconstruction()  local
3383 		struct r5dev *dev = &sh->dev[qd_idx];  in schedule_reconstruction()
3798 		     s->failed_num[i] == sh->qd_idx) &&  in need_this_block()
3820 		    s->failed_num[i] != sh->qd_idx &&  in need_this_block()
3859 		    ((sh->qd_idx >= 0 && sh->pd_idx == disk_idx) ||  in fetch_block()
4025 		if (sh->qd_idx >= 0) {  in handle_stripe_clean_event()
4026 			clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4027 			clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4106 		     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4118 		    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4171 			     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4196 			    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4339 	int qd_idx = sh->qd_idx;  in handle_parity_checks6()  local
4423 			dev = &sh->dev[qd_idx];  in handle_parity_checks6()
4494 						&sh->dev[qd_idx].flags);  in handle_parity_checks6()
4495 					*target = qd_idx;  in handle_parity_checks6()
4522 		if (i != sh->pd_idx && i != sh->qd_idx) {  in handle_stripe_expansion()
4555 				    j != sh2->qd_idx &&  in handle_stripe_expansion()
4928 	       atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,  in handle_stripe()
4995 		BUG_ON(sh->qd_idx >= 0 &&  in handle_stripe()
4996 		       !test_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags) &&  in handle_stripe()
4997 		       !test_bit(R5_Discard, &sh->dev[sh->qd_idx].flags));  in handle_stripe()
5001 				(i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe()
5011 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&  in handle_stripe()
5027 	qdev = &sh->dev[sh->qd_idx];  in handle_stripe()
5028 	s.q_failed = (s.failed >= 1 && s.failed_num[0] == sh->qd_idx)  in handle_stripe()
5029 		|| (s.failed >= 2 && s.failed_num[1] == sh->qd_idx)  in handle_stripe()
5721 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5735 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
6115 			    j == sh->qd_idx)  in reshape_request()