762 	int dd_idx;  in stripe_add_to_batch_list()  local
806 	dd_idx = 0;  in stripe_add_to_batch_list()
807 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
808 		dd_idx++;  in stripe_add_to_batch_list()
809 	if (head->dev[dd_idx].towrite->bi_rw != sh->dev[dd_idx].towrite->bi_rw)  in stripe_add_to_batch_list()
2537 				     int previous, int *dd_idx,  in raid5_compute_sector()  argument
2566 	*dd_idx = sector_div(stripe, data_disks);  in raid5_compute_sector()
2580 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2581 				(*dd_idx)++;  in raid5_compute_sector()
2585 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2586 				(*dd_idx)++;  in raid5_compute_sector()
2590 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2594 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2598 			(*dd_idx)++;  in raid5_compute_sector()
2614 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2616 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2617 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2623 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2625 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2626 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2631 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2636 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2642 			(*dd_idx) += 2;  in raid5_compute_sector()
2656 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2658 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2659 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2672 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2674 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2675 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2683 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2690 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2691 				(*dd_idx)++;  in raid5_compute_sector()
2697 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2698 				(*dd_idx)++;  in raid5_compute_sector()
2704 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2710 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2716 			(*dd_idx)++;  in raid5_compute_sector()
2751 	int dummy1, dd_idx = i;  in compute_blocknr()  local
2849 	if (check != sh->sector || dummy1 != dd_idx || sh2.pd_idx != sh->pd_idx  in compute_blocknr()
2953 static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,  in add_stripe_bio()  argument
2977 		bip = &sh->dev[dd_idx].towrite;  in add_stripe_bio()
2981 		bip = &sh->dev[dd_idx].toread;  in add_stripe_bio()
3001 		sector_t sector = sh->dev[dd_idx].sector;  in add_stripe_bio()
3002 		for (bi=sh->dev[dd_idx].towrite;  in add_stripe_bio()
3003 		     sector < sh->dev[dd_idx].sector + STRIPE_SECTORS &&  in add_stripe_bio()
3005 		     bi = r5_next_bio(bi, sh->dev[dd_idx].sector)) {  in add_stripe_bio()
3009 		if (sector >= sh->dev[dd_idx].sector + STRIPE_SECTORS)  in add_stripe_bio()
3010 			if (!test_and_set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags))  in add_stripe_bio()
3016 		(unsigned long long)sh->sector, dd_idx);  in add_stripe_bio()
3049 	set_bit(R5_Overlap, &sh->dev[dd_idx].flags);  in add_stripe_bio()
3061 	int dd_idx;  in stripe_set_idx()  local
3069 			     &dd_idx, sh);  in stripe_set_idx()
3945 			int dd_idx, j;  in handle_stripe_expansion()  local
3951 							  &dd_idx, NULL);  in handle_stripe_expansion()
3960 			   test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) {  in handle_stripe_expansion()
3968 			tx = async_memcpy(sh2->dev[dd_idx].page,  in handle_stripe_expansion()
3972 			set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
3973 			set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
4813 	int dd_idx;  in chunk_aligned_read()  local
4839 				     0, &dd_idx, NULL);  in chunk_aligned_read()
4843 	rdev = rcu_dereference(conf->disks[dd_idx].replacement);  in chunk_aligned_read()
4846 		rdev = rcu_dereference(conf->disks[dd_idx].rdev);  in chunk_aligned_read()
5151 	int dd_idx;  in make_request()  local
5228 						  &dd_idx, NULL);  in make_request()
5288 			    !add_stripe_bio(sh, bi, dd_idx, rw, previous)) {  in make_request()
5346 	int dd_idx;  in reshape_request()  local
5513 				     1, &dd_idx, NULL);  in reshape_request()
5517 				     1, &dd_idx, NULL);  in reshape_request()
5672 	int dd_idx;  in retry_aligned_read()  local
5681 				      0, &dd_idx, NULL);  in retry_aligned_read()
5702 		if (!add_stripe_bio(sh, raid_bio, dd_idx, 0, 0)) {  in retry_aligned_read()
5709 		set_bit(R5_ReadNoMerge, &sh->dev[dd_idx].flags);  in retry_aligned_read()