194 	if (sh->qd_idx == sh->disks - 1)  in raid6_d0()
536 	sh->disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in init_stripe()
541 	for (i = sh->disks; i--; ) {  in init_stripe()
597 		struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);  in calc_degraded()
599 			rdev = rcu_dereference(conf->disks[i].replacement);  in calc_degraded()
623 		struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);  in calc_degraded()
625 			rdev = rcu_dereference(conf->disks[i].replacement);  in calc_degraded()
725 	BUG_ON(sh->overwrite_disks > (sh->disks - sh->raid_conf->max_degraded));  in is_full_stripe_write()
726 	return sh->overwrite_disks == (sh->disks - sh->raid_conf->max_degraded);  in is_full_stripe_write()
886 	int i, disks = sh->disks;  in ops_run_io()  local
891 	for (i = disks; i--; ) {  in ops_run_io()
921 		rrdev = rcu_dereference(conf->disks[i].replacement);  in ops_run_io()
923 		rdev = rcu_dereference(conf->disks[i].rdev);  in ops_run_io()
1176 	for (i = sh->disks; i--; ) {  in ops_complete_biofill()
1219 	for (i = sh->disks; i--; ) {  in ops_run_biofill()
1279 	return addr + sizeof(struct page *) * (sh->disks + 2);  in to_addr_conv()
1294 	int disks = sh->disks;  in ops_run_compute5()  local
1310 	for (i = disks; i--; )  in ops_run_compute5()
1339 	int disks = sh->disks;  in set_syndrome_sources()  local
1340 	int syndrome_disks = sh->ddf_layout ? disks : (disks - 2);  in set_syndrome_sources()
1345 	for (i = 0; i < disks; i++)  in set_syndrome_sources()
1361 		i = raid6_next_disk(i, disks);  in set_syndrome_sources()
1370 	int disks = sh->disks;  in ops_run_compute6_1()  local
1410 		for (i = disks; i-- ; ) {  in ops_run_compute6_1()
1428 	int i, count, disks = sh->disks;  in ops_run_compute6_2()  local
1429 	int syndrome_disks = sh->ddf_layout ? disks : disks-2;  in ops_run_compute6_2()
1450 	for (i = 0; i < disks ; i++)  in ops_run_compute6_2()
1463 		i = raid6_next_disk(i, disks);  in ops_run_compute6_2()
1495 			for (i = disks; i-- ; ) {  in ops_run_compute6_2()
1545 	int disks = sh->disks;  in ops_run_prexor5()  local
1557 	for (i = disks; i--; ) {  in ops_run_prexor5()
1594 	int disks = sh->disks;  in ops_run_biodrain()  local
1601 	for (i = disks; i--; ) {  in ops_run_biodrain()
1657 	int disks = sh->disks;  in ops_complete_reconstruct()  local
1666 	for (i = disks; i--; ) {  in ops_complete_reconstruct()
1672 	for (i = disks; i--; ) {  in ops_complete_reconstruct()
1702 	int disks = sh->disks;  in ops_run_reconstruct5()  local
1716 	for (i = 0; i < sh->disks; i++) {  in ops_run_reconstruct5()
1722 	if (i >= sh->disks) {  in ops_run_reconstruct5()
1737 		for (i = disks; i--; ) {  in ops_run_reconstruct5()
1744 		for (i = disks; i--; ) {  in ops_run_reconstruct5()
1798 	for (i = 0; i < sh->disks; i++) {  in ops_run_reconstruct6()
1804 	if (i >= sh->disks) {  in ops_run_reconstruct6()
1858 	int disks = sh->disks;  in ops_run_check_p()  local
1875 	for (i = disks; i--; ) {  in ops_run_check_p()
1914 	int overlap_clear = 0, i, disks = sh->disks;  in raid_run_ops()  local
1973 		for (i = disks; i--; ) {  in raid_run_ops()
2226 			ndisks[i] = conf->disks[i];  in resize_stripes()
2227 		kfree(conf->disks);  in resize_stripes()
2228 		conf->disks = ndisks;  in resize_stripes()
2290 	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
2420 	for (i = 0 ; i < disks; i++) {  in raid5_end_write_request()
2422 			rdev = conf->disks[i].rdev;  in raid5_end_write_request()
2426 			rdev = conf->disks[i].replacement;  in raid5_end_write_request()
2434 				rdev = conf->disks[i].rdev;  in raid5_end_write_request()
2441 	if (i == disks) {  in raid5_end_write_request()
2741 	int raid_disks = sh->disks;  in compute_blocknr()
2862 	int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx, disks = sh->disks;  in schedule_reconstruction()  local
2868 		for (i = disks; i--; ) {  in schedule_reconstruction()
2894 		if (s->locked + conf->max_degraded == disks)  in schedule_reconstruction()
2904 		for (i = disks; i--; ) {  in schedule_reconstruction()
3063 	int disks = previous ? conf->previous_raid_disks : conf->raid_disks;  in stripe_set_idx()  local
3066 			     stripe * (disks - conf->max_degraded)  in stripe_set_idx()
3074 				struct stripe_head_state *s, int disks,  in handle_failed_stripe()  argument
3079 	for (i = disks; i--; ) {  in handle_failed_stripe()
3086 			rdev = rcu_dereference(conf->disks[i].rdev);  in handle_failed_stripe()
3212 			struct md_rdev *rdev = conf->disks[i].rdev;  in handle_failed_sync()
3219 			rdev = conf->disks[i].replacement;  in handle_failed_sync()
3239 	rdev = sh->raid_conf->disks[disk_idx].replacement;  in want_replace()
3258 			   int disk_idx, int disks)  in need_this_block()  argument
3348 		       int disk_idx, int disks)  in fetch_block()  argument
3353 	if (need_this_block(sh, s, disk_idx, disks)) {  in fetch_block()
3360 		if ((s->uptodate == disks - 1) &&  in fetch_block()
3382 		} else if (s->uptodate == disks-2 && s->failed >= 2) {  in fetch_block()
3387 			for (other = disks; other--; ) {  in fetch_block()
3424 			       int disks)  in handle_stripe_fill()  argument
3434 		for (i = disks; i--; )  in handle_stripe_fill()
3435 			if (fetch_block(sh, s, i, disks))  in handle_stripe_fill()
3448 	struct stripe_head *sh, int disks, struct bio **return_bi)  in handle_stripe_clean_event()  argument
3456 	for (i = disks; i--; )  in handle_stripe_clean_event()
3552 				   int disks)  in handle_stripe_dirtying()  argument
3574 	} else for (i = disks; i--; ) {  in handle_stripe_dirtying()
3584 				rmw += 2*disks;  /* cannot read it */  in handle_stripe_dirtying()
3595 				rcw += 2*disks;  in handle_stripe_dirtying()
3607 		for (i = disks; i--; ) {  in handle_stripe_dirtying()
3632 		for (i = disks; i--; ) {  in handle_stripe_dirtying()
3661 	if (rcw > disks && rmw > disks &&  in handle_stripe_dirtying()
3682 				struct stripe_head_state *s, int disks)  in handle_parity_checks5()  argument
3693 			BUG_ON(s->uptodate != disks);  in handle_parity_checks5()
3713 		BUG_ON(s->uptodate != disks);  in handle_parity_checks5()
3771 				  int disks)  in handle_parity_checks6()  argument
3838 		BUG_ON(s->uptodate < disks - 1); /* We don't need Q to recover */  in handle_parity_checks6()
3943 	for (i = 0; i < sh->disks; i++)  in handle_stripe_expansion()
4007 	int disks = sh->disks;  in analyse_stripe()  local
4021 	for (i=disks; i--; ) {  in analyse_stripe()
4065 		rdev = rcu_dereference(conf->disks[i].replacement);  in analyse_stripe()
4074 			rdev = rcu_dereference(conf->disks[i].rdev);  in analyse_stripe()
4122 				conf->disks[i].rdev);  in analyse_stripe()
4135 				conf->disks[i].rdev);  in analyse_stripe()
4144 				conf->disks[i].replacement);  in analyse_stripe()
4255 		for (i = 0; i < sh->disks; i++) {  in break_stripe_batch_list()
4272 	for (i = 0; i < head_sh->disks; i++)  in break_stripe_batch_list()
4288 	int disks = sh->disks;  in handle_stripe()  local
4361 			handle_failed_stripe(conf, sh, &s, disks, &s.return_bi);  in handle_stripe()
4384 		for (i = disks; i--; ) {  in handle_stripe()
4426 		handle_stripe_clean_event(conf, sh, disks, &s.return_bi);  in handle_stripe()
4434 	    || (s.syncing && (s.uptodate + s.compute < disks))  in handle_stripe()
4437 		handle_stripe_fill(sh, &s, disks);  in handle_stripe()
4446 		handle_stripe_dirtying(conf, sh, &s, disks);  in handle_stripe()
4458 			handle_parity_checks6(conf, sh, &s, disks);  in handle_stripe()
4460 			handle_parity_checks5(conf, sh, &s, disks);  in handle_stripe()
4542 		sh->disks = conf->raid_disks;  in handle_stripe()
4572 		for (i = disks; i--; ) {  in handle_stripe()
4577 				rdev = conf->disks[i].rdev;  in handle_stripe()
4584 				rdev = conf->disks[i].rdev;  in handle_stripe()
4590 				rdev = conf->disks[i].replacement;  in handle_stripe()
4593 					rdev = conf->disks[i].rdev;  in handle_stripe()
4843 	rdev = rcu_dereference(conf->disks[dd_idx].replacement);  in chunk_aligned_read()
4846 		rdev = rcu_dereference(conf->disks[dd_idx].rdev);  in chunk_aligned_read()
5478 		for (j=sh->disks; j--;) {  in reshape_request()
5642 		struct md_rdev *rdev = ACCESS_ONCE(conf->disks[i].rdev);  in sync_request()
6320 	kfree(conf->disks);  in free_conf()
6496 	conf->disks = kzalloc(max_disks * sizeof(struct disk_info),  in setup_conf()
6498 	if (!conf->disks)  in setup_conf()
6533 		disk = conf->disks + raid_disk;  in setup_conf()
6776 		rdev = conf->disks[i].rdev;  in run()
6777 		if (!rdev && conf->disks[i].replacement) {  in run()
6779 			rdev = conf->disks[i].replacement;  in run()
6780 			conf->disks[i].replacement = NULL;  in run()
6782 			conf->disks[i].rdev = rdev;  in run()
6786 		if (conf->disks[i].replacement &&  in run()
7000 			       conf->disks[i].rdev &&  in status()
7001 			       test_bit(In_sync, &conf->disks[i].rdev->flags) ? "U" : "_");  in status()
7021 		tmp = conf->disks + i;  in print_raid5_conf()
7038 		tmp = conf->disks + i;  in raid5_spare_active()
7078 	struct disk_info *p = conf->disks + number;  in raid5_remove_disk()
7159 	    conf->disks[rdev->saved_raid_disk].rdev == NULL)  in raid5_add_disk()
7163 		p = conf->disks + disk;  in raid5_add_disk()
7175 		p = conf->disks + disk;  in raid5_add_disk()
7478 				struct md_rdev *rdev = conf->disks[d].rdev;  in raid5_finish_reshape()
7481 				rdev = conf->disks[d].replacement;  in raid5_finish_reshape()