517 static void raid5_build_block(struct stripe_head *sh, int i, int previous);
518 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous,
521 static void init_stripe(struct stripe_head *sh, sector_t sector, int previous)  in init_stripe()  argument
535 	sh->generation = conf->generation - previous;  in init_stripe()
536 	sh->disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in init_stripe()
538 	stripe_set_idx(sector, conf, previous, sh);  in init_stripe()
553 		raid5_build_block(sh, i, previous);  in init_stripe()
660 		  int previous, int noblock, int noquiesce)  in get_active_stripe()  argument
673 		sh = __find_stripe(conf, sector, conf->generation - previous);  in get_active_stripe()
698 				init_stripe(sh, sector, previous);  in get_active_stripe()
2487 static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous);
2489 static void raid5_build_block(struct stripe_head *sh, int i, int previous)  in raid5_build_block()  argument
2504 	dev->sector = compute_blocknr(sh, i, previous);  in raid5_build_block()
2537 				     int previous, int *dd_idx,  in raid5_compute_sector()  argument
2546 	int algorithm = previous ? conf->prev_algo  in raid5_compute_sector()
2548 	int sectors_per_chunk = previous ? conf->prev_chunk_sectors  in raid5_compute_sector()
2550 	int raid_disks = previous ? conf->previous_raid_disks  in raid5_compute_sector()
2738 static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)  in compute_blocknr()  argument
2744 	int sectors_per_chunk = previous ? conf->prev_chunk_sectors  in compute_blocknr()
2746 	int algorithm = previous ? conf->prev_algo  in compute_blocknr()
2848 				     previous, &dummy1, &sh2);  in compute_blocknr()
2954 			  int forwrite, int previous)  in add_stripe_bio()  argument
2990 	if (!forwrite || previous)  in add_stripe_bio()
3056 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous,  in stripe_set_idx()  argument
3060 		previous ? conf->prev_chunk_sectors : conf->chunk_sectors;  in stripe_set_idx()
3063 	int disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in stripe_set_idx()
3068 			     previous,  in stripe_set_idx()
5189 		int previous;  in make_request()  local
5195 		previous = 0;  in make_request()
5212 				previous = 1;  in make_request()
5227 						  previous,  in make_request()
5233 		sh = get_active_stripe(conf, new_sector, previous,  in make_request()
5236 			if (unlikely(previous)) {  in make_request()
5288 			    !add_stripe_bio(sh, bi, dd_idx, rw, previous)) {  in make_request()