613 static int rbio_stripe_page_index(struct btrfs_raid_bio *rbio, int stripe,  in rbio_stripe_page_index()  argument
616 	return stripe * rbio->stripe_npages + index;  in rbio_stripe_page_index()
623 static struct page *rbio_stripe_page(struct btrfs_raid_bio *rbio, int stripe,  in rbio_stripe_page()  argument
626 	return rbio->stripe_pages[rbio_stripe_page_index(rbio, stripe, index)];  in rbio_stripe_page()
1088 	struct btrfs_bio_stripe *stripe;  in rbio_add_io_page()  local
1091 	stripe = &rbio->bbio->stripes[stripe_nr];  in rbio_add_io_page()
1092 	disk_start = stripe->physical + (page_index << PAGE_SHIFT);  in rbio_add_io_page()
1095 	if (!stripe->dev->bdev)  in rbio_add_io_page()
1108 		    last->bi_disk == stripe->dev->bdev->bd_disk &&  in rbio_add_io_page()
1109 		    last->bi_partno == stripe->dev->bdev->bd_partno) {  in rbio_add_io_page()
1118 	btrfs_io_bio(bio)->device = stripe->dev;  in rbio_add_io_page()
1120 	bio_set_dev(bio, stripe->dev->bdev);  in rbio_add_io_page()
1194 	int stripe;  in finish_rmw()  local
1242 		for (stripe = 0; stripe < nr_data; stripe++) {  in finish_rmw()
1243 			p = page_in_rbio(rbio, stripe, pagenr, 0);  in finish_rmw()
1244 			pointers[stripe] = kmap(p);  in finish_rmw()
1250 		pointers[stripe++] = kmap(p);  in finish_rmw()
1260 			pointers[stripe++] = kmap(p);  in finish_rmw()
1271 		for (stripe = 0; stripe < rbio->real_stripes; stripe++)  in finish_rmw()
1272 			kunmap(page_in_rbio(rbio, stripe, pagenr, 0));  in finish_rmw()
1280 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in finish_rmw()
1283 			if (stripe < rbio->nr_data) {  in finish_rmw()
1284 				page = page_in_rbio(rbio, stripe, pagenr, 1);  in finish_rmw()
1288 			       page = rbio_stripe_page(rbio, stripe, pagenr);  in finish_rmw()
1292 				       page, stripe, pagenr, rbio->stripe_len);  in finish_rmw()
1301 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in finish_rmw()
1302 		if (!bbio->tgtdev_map[stripe])  in finish_rmw()
1307 			if (stripe < rbio->nr_data) {  in finish_rmw()
1308 				page = page_in_rbio(rbio, stripe, pagenr, 1);  in finish_rmw()
1312 			       page = rbio_stripe_page(rbio, stripe, pagenr);  in finish_rmw()
1316 					       rbio->bbio->tgtdev_map[stripe],  in finish_rmw()
1353 	struct btrfs_bio_stripe *stripe;  in find_bio_stripe()  local
1358 		stripe = &rbio->bbio->stripes[i];  in find_bio_stripe()
1359 		if (in_range(physical, stripe->physical, rbio->stripe_len) &&  in find_bio_stripe()
1360 		    stripe->dev->bdev &&  in find_bio_stripe()
1361 		    bio->bi_disk == stripe->dev->bdev->bd_disk &&  in find_bio_stripe()
1362 		    bio->bi_partno == stripe->dev->bdev->bd_partno) {  in find_bio_stripe()
1498 	int stripe;  in raid56_rmw_stripe()  local
1514 	for (stripe = 0; stripe < rbio->nr_data; stripe++) {  in raid56_rmw_stripe()
1523 			page = page_in_rbio(rbio, stripe, pagenr, 1);  in raid56_rmw_stripe()
1527 			page = rbio_stripe_page(rbio, stripe, pagenr);  in raid56_rmw_stripe()
1536 				       stripe, pagenr, rbio->stripe_len);  in raid56_rmw_stripe()
1789 	int pagenr, stripe;  in __raid_recover_end_io()  local
1826 		for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in __raid_recover_end_io()
1833 			    (stripe == faila || stripe == failb)) {  in __raid_recover_end_io()
1834 				page = page_in_rbio(rbio, stripe, pagenr, 0);  in __raid_recover_end_io()
1836 				page = rbio_stripe_page(rbio, stripe, pagenr);  in __raid_recover_end_io()
1838 			pointers[stripe] = kmap(page);  in __raid_recover_end_io()
1906 			for (stripe = faila; stripe < rbio->nr_data - 1; stripe++)  in __raid_recover_end_io()
1907 				pointers[stripe] = pointers[stripe + 1];  in __raid_recover_end_io()
1931 		for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in __raid_recover_end_io()
1938 			    (stripe == faila || stripe == failb)) {  in __raid_recover_end_io()
1939 				page = page_in_rbio(rbio, stripe, pagenr, 0);  in __raid_recover_end_io()
1941 				page = rbio_stripe_page(rbio, stripe, pagenr);  in __raid_recover_end_io()
2036 	int stripe;  in __raid56_parity_recover()  local
2052 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in __raid56_parity_recover()
2053 		if (rbio->faila == stripe || rbio->failb == stripe) {  in __raid56_parity_recover()
2065 			p = rbio_stripe_page(rbio, stripe, pagenr);  in __raid56_parity_recover()
2070 				       rbio_stripe_page(rbio, stripe, pagenr),  in __raid56_parity_recover()
2071 				       stripe, pagenr, rbio->stripe_len);  in __raid56_parity_recover()
2326 	int stripe;  in finish_parity_scrub()  local
2380 		for (stripe = 0; stripe < nr_data; stripe++) {  in finish_parity_scrub()
2381 			p = page_in_rbio(rbio, stripe, pagenr, 0);  in finish_parity_scrub()
2382 			pointers[stripe] = kmap(p);  in finish_parity_scrub()
2386 		pointers[stripe++] = kmap(p_page);  in finish_parity_scrub()
2393 			pointers[stripe++] = kmap(q_page);  in finish_parity_scrub()
2413 		for (stripe = 0; stripe < nr_data; stripe++)  in finish_parity_scrub()
2414 			kunmap(page_in_rbio(rbio, stripe, pagenr, 0));  in finish_parity_scrub()
2478 static inline int is_data_stripe(struct btrfs_raid_bio *rbio, int stripe)  in is_data_stripe()  argument
2480 	if (stripe >= 0 && stripe < rbio->nr_data)  in is_data_stripe()
2582 	int stripe;  in raid56_parity_scrub_stripe()  local
2596 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {  in raid56_parity_scrub_stripe()
2605 			page = page_in_rbio(rbio, stripe, pagenr, 1);  in raid56_parity_scrub_stripe()
2609 			page = rbio_stripe_page(rbio, stripe, pagenr);  in raid56_parity_scrub_stripe()
2618 				       stripe, pagenr, rbio->stripe_len);  in raid56_parity_scrub_stripe()