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()
945 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
1638 		if (i == sh->qd_idx || i == sh->pd_idx ||  in set_syndrome_sources()
1670 	int qd_idx = sh->qd_idx;  in ops_run_compute6_1()  local
1698 	if (target == qd_idx) {  in ops_run_compute6_1()
1711 			if (i == target || i == qd_idx)  in ops_run_compute6_1()
1794 			int qd_idx = sh->qd_idx;  in ops_run_compute6_2()  local
1797 			if (target == qd_idx)  in ops_run_compute6_2()
1804 				if (i == data_target || i == qd_idx)  in ops_run_compute6_2()
2003 	int qd_idx = sh->qd_idx;  in ops_complete_reconstruct()  local
2019 		if (dev->written || i == pd_idx || i == qd_idx) {  in ops_complete_reconstruct()
2159 		if (sh->pd_idx == i || sh->qd_idx == i)  in ops_run_reconstruct6()
2167 		set_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in ops_run_reconstruct6()
2222 	int qd_idx = sh->qd_idx;  in ops_run_check_p()  local
2242 		if (i == pd_idx || i == qd_idx)  in ops_run_check_p()
2853 			if (sh->qd_idx >= 0 && sh->pd_idx == i)  in raid5_end_read_request()
3000 	int pd_idx, qd_idx;  in raid5_compute_sector()  local
3028 	pd_idx = qd_idx = -1;  in raid5_compute_sector()
3069 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3072 				qd_idx = 0;  in raid5_compute_sector()
3078 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3081 				qd_idx = 0;  in raid5_compute_sector()
3087 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3092 			qd_idx = (pd_idx + 1) % raid_disks;  in raid5_compute_sector()
3098 			qd_idx = 1;  in raid5_compute_sector()
3103 			qd_idx = data_disks + 1;  in raid5_compute_sector()
3111 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3114 				qd_idx = 0;  in raid5_compute_sector()
3127 			qd_idx = pd_idx + 1;  in raid5_compute_sector()
3130 				qd_idx = 0;  in raid5_compute_sector()
3139 			qd_idx = (pd_idx + raid_disks - 1) % raid_disks;  in raid5_compute_sector()
3149 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3156 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3162 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3168 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3174 			qd_idx = raid_disks - 1;  in raid5_compute_sector()
3185 		sh->qd_idx = qd_idx;  in raid5_compute_sector()
3242 		if (i == sh->qd_idx)  in raid5_compute_blocknr()
3307 		|| sh2.qd_idx != sh->qd_idx) {  in raid5_compute_blocknr()
3375 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
3424 			(!(test_bit(R5_UPTODATE, &sh->dev[qd_idx].flags) ||  in schedule_reconstruction()
3425 			   test_bit(R5_Wantcompute, &sh->dev[qd_idx].flags))));  in schedule_reconstruction()
3429 			if (i == pd_idx || i == qd_idx)  in schedule_reconstruction()
3461 		int qd_idx = sh->qd_idx;  in schedule_reconstruction()  local
3462 		struct r5dev *dev = &sh->dev[qd_idx];  in schedule_reconstruction()
3901 		     s->failed_num[i] == sh->qd_idx) &&  in need_this_block()
3923 		    s->failed_num[i] != sh->qd_idx &&  in need_this_block()
3962 		    ((sh->qd_idx >= 0 && sh->pd_idx == disk_idx) ||  in fetch_block()
4128 		if (sh->qd_idx >= 0) {  in handle_stripe_clean_event()
4129 			clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4130 			clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);  in handle_stripe_clean_event()
4209 		     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4221 		    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4274 			     i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe_dirtying()
4299 			    i != sh->pd_idx && i != sh->qd_idx &&  in handle_stripe_dirtying()
4442 	int qd_idx = sh->qd_idx;  in handle_parity_checks6()  local
4526 			dev = &sh->dev[qd_idx];  in handle_parity_checks6()
4597 						&sh->dev[qd_idx].flags);  in handle_parity_checks6()
4598 					*target = qd_idx;  in handle_parity_checks6()
4625 		if (i != sh->pd_idx && i != sh->qd_idx) {  in handle_stripe_expansion()
4659 				    j != sh2->qd_idx &&  in handle_stripe_expansion()
5032 	       atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,  in handle_stripe()
5099 		BUG_ON(sh->qd_idx >= 0 &&  in handle_stripe()
5100 		       !test_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags) &&  in handle_stripe()
5101 		       !test_bit(R5_Discard, &sh->dev[sh->qd_idx].flags));  in handle_stripe()
5105 				(i == sh->pd_idx || i == sh->qd_idx ||  in handle_stripe()
5115 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&  in handle_stripe()
5131 	qdev = &sh->dev[sh->qd_idx];  in handle_stripe()
5132 	s.q_failed = (s.failed >= 1 && s.failed_num[0] == sh->qd_idx)  in handle_stripe()
5133 		|| (s.failed >= 2 && s.failed_num[1] == sh->qd_idx)  in handle_stripe()
5834 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5848 			if (d == sh->pd_idx || d == sh->qd_idx)  in make_discard_request()
5932 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
5952 		if (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in add_all_stripe_bios()
6376 			    j == sh->qd_idx)  in reshape_request()