443 		rdev = conf->mirrors[dev].replacement;  in raid10_end_write_request()
454 			/* Never record new bad blocks to replacement,  in raid10_end_write_request()
752 		rdev = rcu_dereference(conf->mirrors[disk].replacement);  in read_balance()
757 			 * Read replacement first to prevent reading both rdev  in read_balance()
758 			 * and replacement as NULL during replacement replace  in read_balance()
1222 				  struct bio *bio, bool replacement,  in raid10_write_one_disk()  argument
1236 	if (replacement) {  in raid10_write_one_disk()
1237 		rdev = conf->mirrors[devnum].replacement;  in raid10_write_one_disk()
1239 			/* Replacement just got moved to main 'rdev' */  in raid10_write_one_disk()
1247 	if (replacement)  in raid10_write_one_disk()
1257 	if (!replacement && test_bit(FailFast,  in raid10_write_one_disk()
1361 		rrdev = rcu_dereference(conf->mirrors[d].replacement);  in raid10_write_request()
1363 		 * Read replacement first to prevent reading both rdev and  in raid10_write_request()
1364 		 * replacement as NULL during replacement replace rdev.  in raid10_write_request()
1457 				rdev = conf->mirrors[d].replacement;  in raid10_write_request()
1720 		if (tmp->replacement  in raid10_spare_active()
1721 		    && tmp->replacement->recovery_offset == MaxSector  in raid10_spare_active()
1722 		    && !test_bit(Faulty, &tmp->replacement->flags)  in raid10_spare_active()
1723 		    && !test_and_set_bit(In_sync, &tmp->replacement->flags)) {  in raid10_spare_active()
1724 			/* Replacement has just become active */  in raid10_spare_active()
1737 			sysfs_notify_dirent_safe(tmp->replacement->sysfs_state);  in raid10_spare_active()
1788 			    p->replacement != NULL)  in raid10_add_disk()
1791 			set_bit(Replacement, &rdev->flags);  in raid10_add_disk()
1798 			rcu_assign_pointer(p->replacement, rdev);  in raid10_add_disk()
1836 	else if (rdev == p->replacement)  in raid10_remove_disk()
1837 		rdevp = &p->replacement;  in raid10_remove_disk()
1851 	    (!p->replacement || p->replacement == rdev) &&  in raid10_remove_disk()
1867 	if (p->replacement) {  in raid10_remove_disk()
1869 		p->rdev = p->replacement;  in raid10_remove_disk()
1870 		clear_bit(Replacement, &p->replacement->flags);  in raid10_remove_disk()
1874 		p->replacement = NULL;  in raid10_remove_disk()
1970 		rdev = conf->mirrors[d].replacement;  in end_sync_write()
2108 	/* Now write out to any replacement devices  in sync_request_write()
2122 		md_sync_acct(conf->mirrors[d].replacement->bdev,  in sync_request_write()
2261 		atomic_inc(&conf->mirrors[d].replacement->nr_pending);  in recovery_request_write()
2262 		md_sync_acct(conf->mirrors[d].replacement->bdev,  in recovery_request_write()
2647 			rdev = conf->mirrors[dev].replacement;  in handle_write_completed()
2688 			rdev = conf->mirrors[dev].replacement;  in handle_write_completed()
2799 		if (conf->mirrors[i].replacement)  in init_resync()
2986 						rcu_dereference(conf->mirrors[i].replacement);  in raid10_sync_request()
3061 			mreplace = rcu_dereference(mirror->replacement);  in raid10_sync_request()
3086 			/* Unless we are doing a full sync, or a replacement  in raid10_sync_request()
3204 				/* and maybe write to replacement */  in raid10_sync_request()
3378 			rdev = rcu_dereference(conf->mirrors[d].replacement);  in raid10_sync_request()
3385 			/* Need to set up for writing to the replacement */  in raid10_sync_request()
3411 						conf->mirrors[d].replacement,  in raid10_sync_request()
3802 		if (test_bit(Replacement, &rdev->flags)) {  in raid10_run()
3803 			if (disk->replacement)  in raid10_run()
3805 			disk->replacement = rdev;  in raid10_run()
3863 		if (!disk->rdev && disk->replacement) {  in raid10_run()
3864 			/* The replacement is all we have - use it */  in raid10_run()
3865 			disk->rdev = disk->replacement;  in raid10_run()
3866 			disk->replacement = NULL;  in raid10_run()
3867 			clear_bit(Replacement, &disk->rdev->flags);  in raid10_run()
3879 		if (disk->replacement &&  in raid10_run()
3880 		    !test_bit(In_sync, &disk->replacement->flags) &&  in raid10_run()
3881 		    disk->replacement->saved_raid_disk < 0) {  in raid10_run()
4604 			rdev2 = rcu_dereference(conf->mirrors[d].replacement);  in reshape_request()
4696 			rdev = rcu_dereference(conf->mirrors[d].replacement);  in reshape_request_write()
4834 		rdev = conf->mirrors[d].replacement;  in end_reshape_write()
4880 			rdev = rcu_dereference(conf->mirrors[d].replacement);  in raid10_finish_reshape()