194 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
534 	sh->disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in init_stripe()
539 	for (i = sh->disks; i--; ) {  in init_stripe()
595 		struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);  in calc_degraded()
597 			rdev = rcu_dereference(conf->disks[i].replacement);  in calc_degraded()
621 		struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);  in calc_degraded()
623 			rdev = rcu_dereference(conf->disks[i].replacement);  in calc_degraded()
723 	BUG_ON(sh->overwrite_disks > (sh->disks - sh->raid_conf->max_degraded));  in is_full_stripe_write()
724 	return sh->overwrite_disks == (sh->disks - sh->raid_conf->max_degraded);  in is_full_stripe_write()
888 	int i, disks = sh->disks;  in ops_run_io()  local
895 	for (i = disks; i--; ) {  in ops_run_io()
925 		rrdev = rcu_dereference(conf->disks[i].replacement);  in ops_run_io()
927 		rdev = rcu_dereference(conf->disks[i].rdev);  in ops_run_io()
1180 	for (i = sh->disks; i--; ) {  in ops_complete_biofill()
1221 	for (i = sh->disks; i--; ) {  in ops_run_biofill()
1281 	return addr + sizeof(struct page *) * (sh->disks + 2);  in to_addr_conv()
1296 	int disks = sh->disks;  in ops_run_compute5()  local
1312 	for (i = disks; i--; )  in ops_run_compute5()
1341 	int disks = sh->disks;  in set_syndrome_sources()  local
1342 	int syndrome_disks = sh->ddf_layout ? disks : (disks - 2);  in set_syndrome_sources()
1347 	for (i = 0; i < disks; i++)  in set_syndrome_sources()
1363 		i = raid6_next_disk(i, disks);  in set_syndrome_sources()
1372 	int disks = sh->disks;  in ops_run_compute6_1()  local
1412 		for (i = disks; i-- ; ) {  in ops_run_compute6_1()
1430 	int i, count, disks = sh->disks;  in ops_run_compute6_2()  local
1431 	int syndrome_disks = sh->ddf_layout ? disks : disks-2;  in ops_run_compute6_2()
1452 	for (i = 0; i < disks ; i++)  in ops_run_compute6_2()
1465 		i = raid6_next_disk(i, disks);  in ops_run_compute6_2()
1497 			for (i = disks; i-- ; ) {  in ops_run_compute6_2()
1547 	int disks = sh->disks;  in ops_run_prexor5()  local
1559 	for (i = disks; i--; ) {  in ops_run_prexor5()
1596 	int disks = sh->disks;  in ops_run_biodrain()  local
1603 	for (i = disks; i--; ) {  in ops_run_biodrain()
1659 	int disks = sh->disks;  in ops_complete_reconstruct()  local
1668 	for (i = disks; i--; ) {  in ops_complete_reconstruct()
1674 	for (i = disks; i--; ) {  in ops_complete_reconstruct()
1704 	int disks = sh->disks;  in ops_run_reconstruct5()  local
1718 	for (i = 0; i < sh->disks; i++) {  in ops_run_reconstruct5()
1724 	if (i >= sh->disks) {  in ops_run_reconstruct5()
1739 		for (i = disks; i--; ) {  in ops_run_reconstruct5()
1746 		for (i = disks; i--; ) {  in ops_run_reconstruct5()
1800 	for (i = 0; i < sh->disks; i++) {  in ops_run_reconstruct6()
1806 	if (i >= sh->disks) {  in ops_run_reconstruct6()
1860 	int disks = sh->disks;  in ops_run_check_p()  local
1877 	for (i = disks; i--; ) {  in ops_run_check_p()
1916 	int overlap_clear = 0, i, disks = sh->disks;  in raid_run_ops()  local
1975 		for (i = disks; i--; ) {  in raid_run_ops()
2228 			ndisks[i] = conf->disks[i];  in resize_stripes()
2229 		kfree(conf->disks);  in resize_stripes()
2230 		conf->disks = ndisks;  in resize_stripes()
2291 	int disks = sh->disks, i;  in raid5_end_read_request()  local
2296 	for (i=0 ; i<disks; i++)  in raid5_end_read_request()
2303 	if (i == disks) {  in raid5_end_read_request()
2313 		rdev = conf->disks[i].replacement;  in raid5_end_read_request()
2315 		rdev = conf->disks[i].rdev;  in raid5_end_read_request()
2413 	int disks = sh->disks, i;  in raid5_end_write_request()  local
2419 	for (i = 0 ; i < disks; i++) {  in raid5_end_write_request()
2421 			rdev = conf->disks[i].rdev;  in raid5_end_write_request()
2425 			rdev = conf->disks[i].replacement;  in raid5_end_write_request()
2433 				rdev = conf->disks[i].rdev;  in raid5_end_write_request()
2440 	if (i == disks) {  in raid5_end_write_request()
2739 	int raid_disks = sh->disks;  in raid5_compute_blocknr()
2860 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
2866 		for (i = disks; i--; ) {  in schedule_reconstruction()
2892 		if (s->locked + conf->max_degraded == disks)  in schedule_reconstruction()
2902 		for (i = disks; i--; ) {  in schedule_reconstruction()
3061 	int disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in stripe_set_idx()  local
3064 			     stripe * (disks - conf->max_degraded)  in stripe_set_idx()
3072 				struct stripe_head_state *s, int disks,  in handle_failed_stripe()  argument
3077 	for (i = disks; i--; ) {  in handle_failed_stripe()
3084 			rdev = rcu_dereference(conf->disks[i].rdev);  in handle_failed_stripe()
3216 			struct md_rdev *rdev = conf->disks[i].rdev;  in handle_failed_sync()
3223 			rdev = conf->disks[i].replacement;  in handle_failed_sync()
3243 	rdev = sh->raid_conf->disks[disk_idx].replacement;  in want_replace()
3262 			   int disk_idx, int disks)  in need_this_block()  argument
3352 		       int disk_idx, int disks)  in fetch_block()  argument
3357 	if (need_this_block(sh, s, disk_idx, disks)) {  in fetch_block()
3364 		if ((s->uptodate == disks - 1) &&  in fetch_block()
3386 		} else if (s->uptodate == disks-2 && s->failed >= 2) {  in fetch_block()
3391 			for (other = disks; other--; ) {  in fetch_block()
3428 			       int disks)  in handle_stripe_fill()  argument
3438 		for (i = disks; i--; )  in handle_stripe_fill()
3439 			if (fetch_block(sh, s, i, disks))  in handle_stripe_fill()
3452 	struct stripe_head *sh, int disks, struct bio_list *return_bi)  in handle_stripe_clean_event()  argument
3460 	for (i = disks; i--; )  in handle_stripe_clean_event()
3558 				   int disks)  in handle_stripe_dirtying()  argument
3580 	} else for (i = disks; i--; ) {  in handle_stripe_dirtying()
3590 				rmw += 2*disks;  /* cannot read it */  in handle_stripe_dirtying()
3601 				rcw += 2*disks;  in handle_stripe_dirtying()
3613 		for (i = disks; i--; ) {  in handle_stripe_dirtying()
3638 		for (i = disks; i--; ) {  in handle_stripe_dirtying()
3667 	if (rcw > disks && rmw > disks &&  in handle_stripe_dirtying()
3688 				struct stripe_head_state *s, int disks)  in handle_parity_checks5()  argument
3699 			BUG_ON(s->uptodate != disks);  in handle_parity_checks5()
3719 		BUG_ON(s->uptodate != disks);  in handle_parity_checks5()
3777 				  int disks)  in handle_parity_checks6()  argument
3844 		BUG_ON(s->uptodate < disks - 1); /* We don't need Q to recover */  in handle_parity_checks6()
3949 	for (i = 0; i < sh->disks; i++)  in handle_stripe_expansion()
4013 	int disks = sh->disks;  in analyse_stripe()  local
4028 	for (i=disks; i--; ) {  in analyse_stripe()
4072 		rdev = rcu_dereference(conf->disks[i].replacement);  in analyse_stripe()
4083 			rdev = rcu_dereference(conf->disks[i].rdev);  in analyse_stripe()
4131 				conf->disks[i].rdev);  in analyse_stripe()
4144 				conf->disks[i].rdev);  in analyse_stripe()
4153 				conf->disks[i].replacement);  in analyse_stripe()
4264 		for (i = 0; i < sh->disks; i++) {  in break_stripe_batch_list()
4281 	for (i = 0; i < head_sh->disks; i++)  in break_stripe_batch_list()
4297 	int disks = sh->disks;  in handle_stripe()  local
4373 			handle_failed_stripe(conf, sh, &s, disks, &s.return_bi);  in handle_stripe()
4396 		for (i = disks; i--; ) {  in handle_stripe()
4438 		handle_stripe_clean_event(conf, sh, disks, &s.return_bi);  in handle_stripe()
4446 	    || (s.syncing && (s.uptodate + s.compute < disks))  in handle_stripe()
4449 		handle_stripe_fill(sh, &s, disks);  in handle_stripe()
4458 		handle_stripe_dirtying(conf, sh, &s, disks);  in handle_stripe()
4470 			handle_parity_checks6(conf, sh, &s, disks);  in handle_stripe()
4472 			handle_parity_checks5(conf, sh, &s, disks);  in handle_stripe()
4554 		sh->disks = conf->raid_disks;  in handle_stripe()
4584 		for (i = disks; i--; ) {  in handle_stripe()
4589 				rdev = conf->disks[i].rdev;  in handle_stripe()
4596 				rdev = conf->disks[i].rdev;  in handle_stripe()
4602 				rdev = conf->disks[i].replacement;  in handle_stripe()
4605 					rdev = conf->disks[i].rdev;  in handle_stripe()
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()
5491 		for (j=sh->disks; j--;) {  in reshape_request()
5658 		struct md_rdev *rdev = ACCESS_ONCE(conf->disks[i].rdev);  in sync_request()
6359 	kfree(conf->disks);  in free_conf()
6537 	conf->disks = kzalloc(max_disks * sizeof(struct disk_info),  in setup_conf()
6539 	if (!conf->disks)  in setup_conf()
6574 		disk = conf->disks + raid_disk;  in setup_conf()
6838 		rdev = conf->disks[i].rdev;  in run()
6839 		if (!rdev && conf->disks[i].replacement) {  in run()
6841 			rdev = conf->disks[i].replacement;  in run()
6842 			conf->disks[i].replacement = NULL;  in run()
6844 			conf->disks[i].rdev = rdev;  in run()
6848 		if (conf->disks[i].replacement &&  in run()
7070 			       conf->disks[i].rdev &&  in status()
7071 			       test_bit(In_sync, &conf->disks[i].rdev->flags) ? "U" : "_");  in status()
7091 		tmp = conf->disks + i;  in print_raid5_conf()
7108 		tmp = conf->disks + i;  in raid5_spare_active()
7148 	struct disk_info *p = conf->disks + number;  in raid5_remove_disk()
7240 	    conf->disks[rdev->saved_raid_disk].rdev == NULL)  in raid5_add_disk()
7244 		p = conf->disks + disk;  in raid5_add_disk()
7256 		p = conf->disks + disk;  in raid5_add_disk()
7566 				struct md_rdev *rdev = conf->disks[d].rdev;  in raid5_finish_reshape()
7569 				rdev = conf->disks[d].replacement;  in raid5_finish_reshape()