821 	int dd_idx;  in stripe_add_to_batch_list()  local
869 	dd_idx = 0;  in stripe_add_to_batch_list()
870 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
871 		dd_idx++;  in stripe_add_to_batch_list()
872 	if (head->dev[dd_idx].towrite->bi_opf != sh->dev[dd_idx].towrite->bi_opf ||  in stripe_add_to_batch_list()
873 	    bio_op(head->dev[dd_idx].towrite) != bio_op(sh->dev[dd_idx].towrite))  in stripe_add_to_batch_list()
2915 			      int previous, int *dd_idx,  in raid5_compute_sector()  argument
2944 	*dd_idx = sector_div(stripe, data_disks);  in raid5_compute_sector()
2958 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2959 				(*dd_idx)++;  in raid5_compute_sector()
2963 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2964 				(*dd_idx)++;  in raid5_compute_sector()
2968 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2972 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2976 			(*dd_idx)++;  in raid5_compute_sector()
2992 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2994 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2995 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
3001 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
3003 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
3004 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
3009 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
3014 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
3020 			(*dd_idx) += 2;  in raid5_compute_sector()
3034 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
3036 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
3037 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
3050 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
3052 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
3053 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
3061 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
3068 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
3069 				(*dd_idx)++;  in raid5_compute_sector()
3075 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
3076 				(*dd_idx)++;  in raid5_compute_sector()
3082 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
3088 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
3094 			(*dd_idx)++;  in raid5_compute_sector()
3129 	int dummy1, dd_idx = i;  in raid5_compute_blocknr()  local
3227 	if (check != sh->sector || dummy1 != dd_idx || sh2.pd_idx != sh->pd_idx  in raid5_compute_blocknr()
3406 static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,  in add_stripe_bio()  argument
3418 	sh->dev[dd_idx].write_hint = bi->bi_write_hint;  in add_stripe_bio()
3423 		bip = &sh->dev[dd_idx].towrite;  in add_stripe_bio()
3427 		bip = &sh->dev[dd_idx].toread;  in add_stripe_bio()
3452 			    (i == dd_idx || sh->dev[i].towrite)) {  in add_stripe_bio()
3478 		sector_t sector = sh->dev[dd_idx].sector;  in add_stripe_bio()
3479 		for (bi=sh->dev[dd_idx].towrite;  in add_stripe_bio()
3480 		     sector < sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf) &&  in add_stripe_bio()
3482 		     bi = r5_next_bio(conf, bi, sh->dev[dd_idx].sector)) {  in add_stripe_bio()
3486 		if (sector >= sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf))  in add_stripe_bio()
3487 			if (!test_and_set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags))  in add_stripe_bio()
3493 		(unsigned long long)sh->sector, dd_idx);  in add_stripe_bio()
3526 	set_bit(R5_Overlap, &sh->dev[dd_idx].flags);  in add_stripe_bio()
3538 	int dd_idx;  in stripe_set_idx()  local
3546 			     &dd_idx, sh);  in stripe_set_idx()
4523 			int dd_idx, j;  in handle_stripe_expansion()  local
4529 							  &dd_idx, NULL);  in handle_stripe_expansion()
4538 			   test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) {  in handle_stripe_expansion()
4546 			tx = async_memcpy(sh2->dev[dd_idx].page,  in handle_stripe_expansion()
4547 					  sh->dev[i].page, sh2->dev[dd_idx].offset,  in handle_stripe_expansion()
4551 			set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
4552 			set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
5396 	int dd_idx;  in raid5_read_one_chunk()  local
5422 				     0, &dd_idx, NULL);  in raid5_read_one_chunk()
5426 	rdev = rcu_dereference(conf->disks[dd_idx].replacement);  in raid5_read_one_chunk()
5429 		rdev = rcu_dereference(conf->disks[dd_idx].rdev);  in raid5_read_one_chunk()
5769 	int dd_idx;  in raid5_make_request()  local
5860 						  &dd_idx, NULL);  in raid5_make_request()
5901 			    !add_stripe_bio(sh, bi, dd_idx, rw, previous)) {  in raid5_make_request()
5960 	int dd_idx;  in reshape_request()  local
6145 				     1, &dd_idx, NULL);  in reshape_request()
6149 				     1, &dd_idx, NULL);  in reshape_request()
6318 	int dd_idx;  in retry_aligned_read()  local
6326 				      0, &dd_idx, NULL);  in retry_aligned_read()
6347 		if (!add_stripe_bio(sh, raid_bio, dd_idx, 0, 0)) {  in retry_aligned_read()
6354 		set_bit(R5_ReadNoMerge, &sh->dev[dd_idx].flags);  in retry_aligned_read()