125 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
128 		return sh->qd_idx + 1;  in raid6_d0()
150 	if (idx == sh->qd_idx)  in raid6_idx_to_slot()
952 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
1645 		if (i == sh->qd_idx || i == sh->pd_idx ||  in set_syndrome_sources()
1677 	int qd_idx = sh->qd_idx;  in ops_run_compute6_1()  local
1705 	if (target == qd_idx) {  in ops_run_compute6_1()
1718 			if (i == target || i == qd_idx)  in ops_run_compute6_1()
1801 			int qd_idx = sh->qd_idx;  in ops_run_compute6_2()  local
1804 			if (target == qd_idx)  in ops_run_compute6_2()
1811 				if (i == data_target || i == qd_idx)  in ops_run_compute6_2()
2010 	int qd_idx = sh->qd_idx;  in ops_complete_reconstruct()  local
2026 		if (dev->written || i == pd_idx || i == qd_idx) {  in ops_complete_reconstruct()
2166 		if (sh->pd_idx == i || sh->qd_idx == i)  in ops_run_reconstruct6()
2174 		set_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in ops_run_reconstruct6()
2229 	int qd_idx = sh->qd_idx;  in ops_run_check_p()  local
2249 		if (i == pd_idx || i == qd_idx)  in ops_run_check_p()
2860 			if (sh->qd_idx >= 0 && sh->pd_idx == i)  in raid5_end_read_request()
3007 	int pd_idx, qd_idx;  in raid5_compute_sector()  local
3035 	pd_idx = qd_idx = -1;  in raid5_compute_sector()
3076 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3079 				qd_idx = 0;  in raid5_compute_sector()
3085 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3088 				qd_idx = 0;  in raid5_compute_sector()
3094 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3099 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3105 			qd_idx = 1;  in raid5_compute_sector()
3110 			qd_idx = data_disks + 1;  in raid5_compute_sector()
3118 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3121 				qd_idx = 0;  in raid5_compute_sector()
3134 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3137 				qd_idx = 0;  in raid5_compute_sector()
3146 			qd_idx = (pd_idx + raid_disks - 1) % raid_disks;  in raid5_compute_sector()
3156 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3163 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3169 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3175 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3181 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3192 		sh->qd_idx = qd_idx;  in raid5_compute_sector()
3249 		if (i == sh->qd_idx)  in raid5_compute_blocknr()
3314 		|| sh2.qd_idx != sh->qd_idx) {  in raid5_compute_blocknr()
3382 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
3431 			(!(test_bit(R5_UPTODATE, &sh->dev[qd_idx].flags) ||  in schedule_reconstruction()
3432 			   test_bit(R5_Wantcompute, &sh->dev[qd_idx].flags))));  in schedule_reconstruction()
3436 			if (i == pd_idx || i == qd_idx)  in schedule_reconstruction()
3468 		int qd_idx = sh->qd_idx;  in schedule_reconstruction()  local
3469 		struct r5dev *dev = &sh->dev[qd_idx];  in schedule_reconstruction()
3908 		     s->failed_num[i] == sh->qd_idx) &&  in need_this_block()
3930 		    s->failed_num[i] != sh->qd_idx &&  in need_this_block()
3969 		    ((sh->qd_idx >= 0 && sh->pd_idx == disk_idx) ||  in fetch_block()
4135 		if (sh->qd_idx >= 0) {  in handle_stripe_clean_event()
4136 			clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4137 			clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4216 		     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4228 		    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4281 			     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4306 			    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4449 	int qd_idx = sh->qd_idx;  in handle_parity_checks6()  local
4533 			dev = &sh->dev[qd_idx];  in handle_parity_checks6()
4604 						&sh->dev[qd_idx].flags);  in handle_parity_checks6()
4605 					*target = qd_idx;  in handle_parity_checks6()
4632 		if (i != sh->pd_idx && i != sh->qd_idx) {  in handle_stripe_expansion()
4666 				    j != sh2->qd_idx &&  in handle_stripe_expansion()
5039 	       atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,  in handle_stripe()
5106 		BUG_ON(sh->qd_idx >= 0 &&  in handle_stripe()
5107 		       !test_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags) &&  in handle_stripe()
5108 		       !test_bit(R5_Discard, &sh->dev[sh->qd_idx].flags));  in handle_stripe()
5112 				(i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe()
5122 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&  in handle_stripe()
5138 	qdev = &sh->dev[sh->qd_idx];  in handle_stripe()
5139 	s.q_failed = (s.failed >= 1 && s.failed_num[0] == sh->qd_idx)  in handle_stripe()
5140 		|| (s.failed >= 2 && s.failed_num[1] == sh->qd_idx)  in handle_stripe()
5828 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5842 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5926 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
5946 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
6124 	while (dd_idx == sh.pd_idx || dd_idx == sh.qd_idx)  in raid5_bio_lowest_chunk_sector()
6436 			    j == sh->qd_idx)  in reshape_request()