158 	mirror_map_t *mm;  in vdev_mirror_map_alloc()  local
160 	mm = kmem_zalloc(vdev_mirror_map_size(children), KM_SLEEP);  in vdev_mirror_map_alloc()
161 	mm->mm_children = children;  in vdev_mirror_map_alloc()
162 	mm->mm_resilvering = resilvering;  in vdev_mirror_map_alloc()
163 	mm->mm_root = root;  in vdev_mirror_map_alloc()
164 	mm->mm_preferred = (int *)((uintptr_t)mm +  in vdev_mirror_map_alloc()
167 	return (mm);  in vdev_mirror_map_alloc()
173 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_map_free()  local
175 	kmem_free(mm, vdev_mirror_map_size(mm->mm_children));  in vdev_mirror_map_free()
183 vdev_mirror_load(mirror_map_t *mm, vdev_t *vd, uint64_t zio_offset)  in vdev_mirror_load()  argument
190 	if (mm->mm_root)  in vdev_mirror_load()
268 	mirror_map_t *mm = NULL;  in vdev_mirror_map_init()  local
326 		mm = vdev_mirror_map_alloc(c, B_FALSE, B_TRUE);  in vdev_mirror_map_init()
327 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_map_init()
328 			mc = &mm->mm_child[c];  in vdev_mirror_map_init()
333 				kmem_free(mm, vdev_mirror_map_size(  in vdev_mirror_map_init()
334 				    mm->mm_children));  in vdev_mirror_map_init()
372 		mm = vdev_mirror_map_alloc(vd->vdev_children, replacing,  in vdev_mirror_map_init()
374 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_map_init()
375 			mc = &mm->mm_child[c];  in vdev_mirror_map_init()
380 				mm->mm_rebuilding = mc->mc_rebuilding = B_TRUE;  in vdev_mirror_map_init()
384 	return (mm);  in vdev_mirror_map_init()
462 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_dva_select()  local
466 	preferred = mm->mm_preferred[p];  in vdev_mirror_dva_select()
468 		c = mm->mm_preferred[p];  in vdev_mirror_dva_select()
478 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_preferred_child_randomize()  local
481 	if (mm->mm_root) {  in vdev_mirror_preferred_child_randomize()
482 		p = random_in_range(mm->mm_preferred_cnt);  in vdev_mirror_preferred_child_randomize()
492 	p = (zio->io_offset >> vdev_mirror_shift) % mm->mm_preferred_cnt;  in vdev_mirror_preferred_child_randomize()
493 	return (mm->mm_preferred[p]);  in vdev_mirror_preferred_child_randomize()
531 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_child_select()  local
538 	mm->mm_preferred_cnt = 0;  in vdev_mirror_child_select()
539 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_child_select()
542 		mc = &mm->mm_child[c];  in vdev_mirror_child_select()
562 			mm->mm_preferred[0] = c;  in vdev_mirror_child_select()
563 			mm->mm_preferred_cnt = 1;  in vdev_mirror_child_select()
567 		mc->mc_load = vdev_mirror_load(mm, mc->mc_vd, mc->mc_offset);  in vdev_mirror_child_select()
573 			mm->mm_preferred_cnt = 0;  in vdev_mirror_child_select()
575 		mm->mm_preferred[mm->mm_preferred_cnt] = c;  in vdev_mirror_child_select()
576 		mm->mm_preferred_cnt++;  in vdev_mirror_child_select()
579 	if (mm->mm_preferred_cnt == 1) {  in vdev_mirror_child_select()
581 		return (mm->mm_preferred[0]);  in vdev_mirror_child_select()
584 	if (mm->mm_preferred_cnt > 1) {  in vdev_mirror_child_select()
593 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_child_select()
594 		if (!mm->mm_child[c].mc_tried)  in vdev_mirror_child_select()
607 	mirror_map_t *mm;  in vdev_mirror_io_start()  local
611 	mm = vdev_mirror_map_init(zio);  in vdev_mirror_io_start()
612 	zio->io_vsd = mm;  in vdev_mirror_io_start()
615 	if (mm == NULL) {  in vdev_mirror_io_start()
623 		if ((zio->io_flags & ZIO_FLAG_SCRUB) && !mm->mm_resilvering) {  in vdev_mirror_io_start()
632 			for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_start()
633 				mc = &mm->mm_child[c];  in vdev_mirror_io_start()
668 		children = mm->mm_children;  in vdev_mirror_io_start()
672 		mc = &mm->mm_child[c];  in vdev_mirror_io_start()
684 		    mm->mm_rebuilding && !mc->mc_rebuilding) {  in vdev_mirror_io_start()
698 vdev_mirror_worst_error(mirror_map_t *mm)  in vdev_mirror_worst_error()  argument
702 	for (int c = 0; c < mm->mm_children; c++) {  in vdev_mirror_worst_error()
703 		mirror_child_t *mc = &mm->mm_child[c];  in vdev_mirror_worst_error()
714 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_io_done()  local
721 	if (mm == NULL)  in vdev_mirror_io_done()
724 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
725 		mc = &mm->mm_child[c];  in vdev_mirror_io_done()
745 		if (good_copies != mm->mm_children) {  in vdev_mirror_io_done()
761 				zio->io_error = vdev_mirror_worst_error(mm);  in vdev_mirror_io_done()
784 		zio->io_error = vdev_mirror_worst_error(mm);  in vdev_mirror_io_done()
793 		ASSERT(c >= 0 && c < mm->mm_children);  in vdev_mirror_io_done()
794 		mc = &mm->mm_child[c];  in vdev_mirror_io_done()
803 	if (zio->io_flags & ZIO_FLAG_SCRUB && !mm->mm_resilvering) {  in vdev_mirror_io_done()
806 			best_abd = mm->mm_child[last_good_copy].mc_abd;  in vdev_mirror_io_done()
822 				mc = &mm->mm_child[c];  in vdev_mirror_io_done()
857 				mc = &mm->mm_child[c];  in vdev_mirror_io_done()
869 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
870 			mc = &mm->mm_child[c];  in vdev_mirror_io_done()
878 		zio->io_error = vdev_mirror_worst_error(mm);  in vdev_mirror_io_done()
885 	    ((zio->io_flags & ZIO_FLAG_SCRUB) && mm->mm_resilvering))) {  in vdev_mirror_io_done()
889 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
897 			mc = &mm->mm_child[c];  in vdev_mirror_io_done()