764 	int dd_idx;  in stripe_add_to_batch_list()  local
808 	dd_idx = 0;  in stripe_add_to_batch_list()
809 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
810 		dd_idx++;  in stripe_add_to_batch_list()
811 	if (head->dev[dd_idx].towrite->bi_rw != sh->dev[dd_idx].towrite->bi_rw)  in stripe_add_to_batch_list()
2535 			      int previous, int *dd_idx,  in raid5_compute_sector()  argument
2564 	*dd_idx = sector_div(stripe, data_disks);  in raid5_compute_sector()
2578 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2579 				(*dd_idx)++;  in raid5_compute_sector()
2583 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2584 				(*dd_idx)++;  in raid5_compute_sector()
2588 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2592 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2596 			(*dd_idx)++;  in raid5_compute_sector()
2612 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2614 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2615 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2621 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2623 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2624 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2629 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2634 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2640 			(*dd_idx) += 2;  in raid5_compute_sector()
2654 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2656 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2657 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2670 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2672 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2673 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2681 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2688 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2689 				(*dd_idx)++;  in raid5_compute_sector()
2695 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2696 				(*dd_idx)++;  in raid5_compute_sector()
2702 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2708 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2714 			(*dd_idx)++;  in raid5_compute_sector()
2749 	int dummy1, dd_idx = i;  in raid5_compute_blocknr()  local
2847 	if (check != sh->sector || dummy1 != dd_idx || sh2.pd_idx != sh->pd_idx  in raid5_compute_blocknr()
2951 static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,  in add_stripe_bio()  argument
2975 		bip = &sh->dev[dd_idx].towrite;  in add_stripe_bio()
2979 		bip = &sh->dev[dd_idx].toread;  in add_stripe_bio()
2999 		sector_t sector = sh->dev[dd_idx].sector;  in add_stripe_bio()
3000 		for (bi=sh->dev[dd_idx].towrite;  in add_stripe_bio()
3001 		     sector < sh->dev[dd_idx].sector + STRIPE_SECTORS &&  in add_stripe_bio()
3003 		     bi = r5_next_bio(bi, sh->dev[dd_idx].sector)) {  in add_stripe_bio()
3007 		if (sector >= sh->dev[dd_idx].sector + STRIPE_SECTORS)  in add_stripe_bio()
3008 			if (!test_and_set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags))  in add_stripe_bio()
3014 		(unsigned long long)sh->sector, dd_idx);  in add_stripe_bio()
3047 	set_bit(R5_Overlap, &sh->dev[dd_idx].flags);  in add_stripe_bio()
3059 	int dd_idx;  in stripe_set_idx()  local
3067 			     &dd_idx, sh);  in stripe_set_idx()
3951 			int dd_idx, j;  in handle_stripe_expansion()  local
3957 							  &dd_idx, NULL);  in handle_stripe_expansion()
3966 			   test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) {  in handle_stripe_expansion()
3974 			tx = async_memcpy(sh2->dev[dd_idx].page,  in handle_stripe_expansion()
3978 			set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
3979 			set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
4785 	int dd_idx;  in raid5_read_one_chunk()  local
4811 				     0, &dd_idx, NULL);  in raid5_read_one_chunk()
4815 	rdev = rcu_dereference(conf->disks[dd_idx].replacement);  in raid5_read_one_chunk()
4818 		rdev = rcu_dereference(conf->disks[dd_idx].rdev);  in raid5_read_one_chunk()
5146 	int dd_idx;  in make_request()  local
5232 						  &dd_idx, NULL);  in make_request()
5292 			    !add_stripe_bio(sh, bi, dd_idx, rw, previous)) {  in make_request()
5350 	int dd_idx;  in reshape_request()  local
5526 				     1, &dd_idx, NULL);  in reshape_request()
5530 				     1, &dd_idx, NULL);  in reshape_request()
5688 	int dd_idx;  in retry_aligned_read()  local
5697 				      0, &dd_idx, NULL);  in retry_aligned_read()
5718 		if (!add_stripe_bio(sh, raid_bio, dd_idx, 0, 0)) {  in retry_aligned_read()
5725 		set_bit(R5_ReadNoMerge, &sh->dev[dd_idx].flags);  in retry_aligned_read()