744 	int dd_idx;  in stripe_add_to_batch_list()  local
792 	dd_idx = 0;  in stripe_add_to_batch_list()
793 	while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)  in stripe_add_to_batch_list()
794 		dd_idx++;  in stripe_add_to_batch_list()
795 	if (head->dev[dd_idx].towrite->bi_opf != sh->dev[dd_idx].towrite->bi_opf ||  in stripe_add_to_batch_list()
796 	    bio_op(head->dev[dd_idx].towrite) != bio_op(sh->dev[dd_idx].towrite))  in stripe_add_to_batch_list()
2714 			      int previous, int *dd_idx,  in raid5_compute_sector()  argument
2743 	*dd_idx = sector_div(stripe, data_disks);  in raid5_compute_sector()
2757 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2758 				(*dd_idx)++;  in raid5_compute_sector()
2762 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2763 				(*dd_idx)++;  in raid5_compute_sector()
2767 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2771 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2775 			(*dd_idx)++;  in raid5_compute_sector()
2791 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2793 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2794 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2800 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2802 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2803 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2808 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2813 			*dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2819 			(*dd_idx) += 2;  in raid5_compute_sector()
2833 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2835 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2836 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2849 				(*dd_idx)++;	/* Q D D D P */  in raid5_compute_sector()
2851 			} else if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2852 				(*dd_idx) += 2; /* D D P Q D */  in raid5_compute_sector()
2860 			*dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;  in raid5_compute_sector()
2867 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2868 				(*dd_idx)++;  in raid5_compute_sector()
2874 			if (*dd_idx >= pd_idx)  in raid5_compute_sector()
2875 				(*dd_idx)++;  in raid5_compute_sector()
2881 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2887 			*dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);  in raid5_compute_sector()
2893 			(*dd_idx)++;  in raid5_compute_sector()
2928 	int dummy1, dd_idx = i;  in raid5_compute_blocknr()  local
3026 	if (check != sh->sector || dummy1 != dd_idx || sh2.pd_idx != sh->pd_idx  in raid5_compute_blocknr()
3205 static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,  in add_stripe_bio()  argument
3217 	sh->dev[dd_idx].write_hint = bi->bi_write_hint;  in add_stripe_bio()
3222 		bip = &sh->dev[dd_idx].towrite;  in add_stripe_bio()
3226 		bip = &sh->dev[dd_idx].toread;  in add_stripe_bio()
3251 			    (i == dd_idx || sh->dev[i].towrite)) {  in add_stripe_bio()
3277 		sector_t sector = sh->dev[dd_idx].sector;  in add_stripe_bio()
3278 		for (bi=sh->dev[dd_idx].towrite;  in add_stripe_bio()
3279 		     sector < sh->dev[dd_idx].sector + STRIPE_SECTORS &&  in add_stripe_bio()
3281 		     bi = r5_next_bio(bi, sh->dev[dd_idx].sector)) {  in add_stripe_bio()
3285 		if (sector >= sh->dev[dd_idx].sector + STRIPE_SECTORS)  in add_stripe_bio()
3286 			if (!test_and_set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags))  in add_stripe_bio()
3292 		(unsigned long long)sh->sector, dd_idx);  in add_stripe_bio()
3325 	set_bit(R5_Overlap, &sh->dev[dd_idx].flags);  in add_stripe_bio()
3337 	int dd_idx;  in stripe_set_idx()  local
3345 			     &dd_idx, sh);  in stripe_set_idx()
4315 			int dd_idx, j;  in handle_stripe_expansion()  local
4321 							  &dd_idx, NULL);  in handle_stripe_expansion()
4330 			   test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) {  in handle_stripe_expansion()
4338 			tx = async_memcpy(sh2->dev[dd_idx].page,  in handle_stripe_expansion()
4342 			set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
4343 			set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags);  in handle_stripe_expansion()
5207 	int dd_idx;  in raid5_read_one_chunk()  local
5233 				     0, &dd_idx, NULL);  in raid5_read_one_chunk()
5237 	rdev = rcu_dereference(conf->disks[dd_idx].replacement);  in raid5_read_one_chunk()
5240 		rdev = rcu_dereference(conf->disks[dd_idx].rdev);  in raid5_read_one_chunk()
5580 	int dd_idx;  in raid5_make_request()  local
5671 						  &dd_idx, NULL);  in raid5_make_request()
5712 			    !add_stripe_bio(sh, bi, dd_idx, rw, previous)) {  in raid5_make_request()
5772 	int dd_idx;  in reshape_request()  local
5957 				     1, &dd_idx, NULL);  in reshape_request()
5961 				     1, &dd_idx, NULL);  in reshape_request()
6129 	int dd_idx;  in retry_aligned_read()  local
6137 				      0, &dd_idx, NULL);  in retry_aligned_read()
6158 		if (!add_stripe_bio(sh, raid_bio, dd_idx, 0, 0)) {  in retry_aligned_read()
6165 		set_bit(R5_ReadNoMerge, &sh->dev[dd_idx].flags);  in retry_aligned_read()