130 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
133 		return sh->qd_idx + 1;  in raid6_d0()
155 	if (idx == sh->qd_idx)  in raid6_idx_to_slot()
955 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
1623 		if (i == sh->qd_idx || i == sh->pd_idx ||  in set_syndrome_sources()
1655 	int qd_idx = sh->qd_idx;  in ops_run_compute6_1()  local
1683 	if (target == qd_idx) {  in ops_run_compute6_1()
1696 			if (i == target || i == qd_idx)  in ops_run_compute6_1()
1779 			int qd_idx = sh->qd_idx;  in ops_run_compute6_2()  local
1782 			if (target == qd_idx)  in ops_run_compute6_2()
1789 				if (i == data_target || i == qd_idx)  in ops_run_compute6_2()
1988 	int qd_idx = sh->qd_idx;  in ops_complete_reconstruct()  local
2004 		if (dev->written || i == pd_idx || i == qd_idx) {  in ops_complete_reconstruct()
2144 		if (sh->pd_idx == i || sh->qd_idx == i)  in ops_run_reconstruct6()
2152 		set_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in ops_run_reconstruct6()
2207 	int qd_idx = sh->qd_idx;  in ops_run_check_p()  local
2227 		if (i == pd_idx || i == qd_idx)  in ops_run_check_p()
2814 			if (sh->qd_idx >= 0 && sh->pd_idx == i)  in raid5_end_read_request()
2953 	int pd_idx, qd_idx;  in raid5_compute_sector()  local
2981 	pd_idx = qd_idx = -1;  in raid5_compute_sector()
3022 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3025 				qd_idx = 0;  in raid5_compute_sector()
3031 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3034 				qd_idx = 0;  in raid5_compute_sector()
3040 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3045 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3051 			qd_idx = 1;  in raid5_compute_sector()
3056 			qd_idx = data_disks + 1;  in raid5_compute_sector()
3064 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3067 				qd_idx = 0;  in raid5_compute_sector()
3080 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3083 				qd_idx = 0;  in raid5_compute_sector()
3092 			qd_idx = (pd_idx + raid_disks - 1) % raid_disks;  in raid5_compute_sector()
3102 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3109 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3115 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3121 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3127 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3138 		sh->qd_idx = qd_idx;  in raid5_compute_sector()
3195 		if (i == sh->qd_idx)  in raid5_compute_blocknr()
3260 		|| sh2.qd_idx != sh->qd_idx) {  in raid5_compute_blocknr()
3328 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
3377 			(!(test_bit(R5_UPTODATE, &sh->dev[qd_idx].flags) ||  in schedule_reconstruction()
3378 			   test_bit(R5_Wantcompute, &sh->dev[qd_idx].flags))));  in schedule_reconstruction()
3382 			if (i == pd_idx || i == qd_idx)  in schedule_reconstruction()
3414 		int qd_idx = sh->qd_idx;  in schedule_reconstruction()  local
3415 		struct r5dev *dev = &sh->dev[qd_idx];  in schedule_reconstruction()
3823 		     s->failed_num[i] == sh->qd_idx) &&  in need_this_block()
3845 		    s->failed_num[i] != sh->qd_idx &&  in need_this_block()
3884 		    ((sh->qd_idx >= 0 && sh->pd_idx == disk_idx) ||  in fetch_block()
4049 		if (sh->qd_idx >= 0) {  in handle_stripe_clean_event()
4050 			clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4051 			clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4137 		     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4149 		    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4201 			     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4226 			    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4369 	int qd_idx = sh->qd_idx;  in handle_parity_checks6()  local
4453 			dev = &sh->dev[qd_idx];  in handle_parity_checks6()
4523 						&sh->dev[qd_idx].flags);  in handle_parity_checks6()
4524 					*target = qd_idx;  in handle_parity_checks6()
4551 		if (i != sh->pd_idx && i != sh->qd_idx) {  in handle_stripe_expansion()
4585 				    j != sh2->qd_idx &&  in handle_stripe_expansion()
4955 	       atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,  in handle_stripe()
5023 		BUG_ON(sh->qd_idx >= 0 &&  in handle_stripe()
5024 		       !test_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags) &&  in handle_stripe()
5025 		       !test_bit(R5_Discard, &sh->dev[sh->qd_idx].flags));  in handle_stripe()
5029 				(i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe()
5039 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&  in handle_stripe()
5055 	qdev = &sh->dev[sh->qd_idx];  in handle_stripe()
5056 	s.q_failed = (s.failed >= 1 && s.failed_num[0] == sh->qd_idx)  in handle_stripe()
5057 		|| (s.failed >= 2 && s.failed_num[1] == sh->qd_idx)  in handle_stripe()
5734 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5748 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5794 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_ahead_of_reshape()
5824 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
5849 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
6077 	while (dd_idx == sh.pd_idx || dd_idx == sh.qd_idx)  in raid5_bio_lowest_chunk_sector()
6416 			    j == sh->qd_idx)  in reshape_request()