157 	mirror_map_t *mm;  in vdev_mirror_map_alloc()  local
159 	mm = kmem_zalloc(vdev_mirror_map_size(children), KM_SLEEP);  in vdev_mirror_map_alloc()
160 	mm->mm_children = children;  in vdev_mirror_map_alloc()
161 	mm->mm_resilvering = resilvering;  in vdev_mirror_map_alloc()
162 	mm->mm_root = root;  in vdev_mirror_map_alloc()
163 	mm->mm_preferred = (int *)((uintptr_t)mm +  in vdev_mirror_map_alloc()
166 	return (mm);  in vdev_mirror_map_alloc()
172 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_map_free()  local
174 	kmem_free(mm, vdev_mirror_map_size(mm->mm_children));  in vdev_mirror_map_free()
182 vdev_mirror_load(mirror_map_t *mm, vdev_t *vd, uint64_t zio_offset)  in vdev_mirror_load()  argument
189 	if (mm->mm_root)  in vdev_mirror_load()
267 	mirror_map_t *mm = NULL;  in vdev_mirror_map_init()  local
325 		mm = vdev_mirror_map_alloc(c, B_FALSE, B_TRUE);  in vdev_mirror_map_init()
326 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_map_init()
327 			mc = &mm->mm_child[c];  in vdev_mirror_map_init()
332 				kmem_free(mm, vdev_mirror_map_size(  in vdev_mirror_map_init()
333 				    mm->mm_children));  in vdev_mirror_map_init()
371 		mm = vdev_mirror_map_alloc(vd->vdev_children, replacing,  in vdev_mirror_map_init()
373 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_map_init()
374 			mc = &mm->mm_child[c];  in vdev_mirror_map_init()
379 				mm->mm_rebuilding = mc->mc_rebuilding = B_TRUE;  in vdev_mirror_map_init()
383 	return (mm);  in vdev_mirror_map_init()
461 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_dva_select()  local
465 	preferred = mm->mm_preferred[p];  in vdev_mirror_dva_select()
467 		c = mm->mm_preferred[p];  in vdev_mirror_dva_select()
477 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_preferred_child_randomize()  local
480 	if (mm->mm_root) {  in vdev_mirror_preferred_child_randomize()
481 		p = random_in_range(mm->mm_preferred_cnt);  in vdev_mirror_preferred_child_randomize()
491 	p = (zio->io_offset >> vdev_mirror_shift) % mm->mm_preferred_cnt;  in vdev_mirror_preferred_child_randomize()
492 	return (mm->mm_preferred[p]);  in vdev_mirror_preferred_child_randomize()
530 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_child_select()  local
537 	mm->mm_preferred_cnt = 0;  in vdev_mirror_child_select()
538 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_child_select()
541 		mc = &mm->mm_child[c];  in vdev_mirror_child_select()
561 			mm->mm_preferred[0] = c;  in vdev_mirror_child_select()
562 			mm->mm_preferred_cnt = 1;  in vdev_mirror_child_select()
566 		mc->mc_load = vdev_mirror_load(mm, mc->mc_vd, mc->mc_offset);  in vdev_mirror_child_select()
572 			mm->mm_preferred_cnt = 0;  in vdev_mirror_child_select()
574 		mm->mm_preferred[mm->mm_preferred_cnt] = c;  in vdev_mirror_child_select()
575 		mm->mm_preferred_cnt++;  in vdev_mirror_child_select()
578 	if (mm->mm_preferred_cnt == 1) {  in vdev_mirror_child_select()
580 		return (mm->mm_preferred[0]);  in vdev_mirror_child_select()
583 	if (mm->mm_preferred_cnt > 1) {  in vdev_mirror_child_select()
592 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_child_select()
593 		if (!mm->mm_child[c].mc_tried)  in vdev_mirror_child_select()
606 	mirror_map_t *mm;  in vdev_mirror_io_start()  local
610 	mm = vdev_mirror_map_init(zio);  in vdev_mirror_io_start()
611 	zio->io_vsd = mm;  in vdev_mirror_io_start()
614 	if (mm == NULL) {  in vdev_mirror_io_start()
622 		if ((zio->io_flags & ZIO_FLAG_SCRUB) && !mm->mm_resilvering) {  in vdev_mirror_io_start()
631 			for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_start()
632 				mc = &mm->mm_child[c];  in vdev_mirror_io_start()
667 		children = mm->mm_children;  in vdev_mirror_io_start()
671 		mc = &mm->mm_child[c];  in vdev_mirror_io_start()
683 		    mm->mm_rebuilding && !mc->mc_rebuilding) {  in vdev_mirror_io_start()
697 vdev_mirror_worst_error(mirror_map_t *mm)  in vdev_mirror_worst_error()  argument
701 	for (int c = 0; c < mm->mm_children; c++) {  in vdev_mirror_worst_error()
702 		mirror_child_t *mc = &mm->mm_child[c];  in vdev_mirror_worst_error()
713 	mirror_map_t *mm = zio->io_vsd;  in vdev_mirror_io_done()  local
720 	if (mm == NULL)  in vdev_mirror_io_done()
723 	for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
724 		mc = &mm->mm_child[c];  in vdev_mirror_io_done()
744 		if (good_copies != mm->mm_children) {  in vdev_mirror_io_done()
760 				zio->io_error = vdev_mirror_worst_error(mm);  in vdev_mirror_io_done()
771 		ASSERT(c >= 0 && c < mm->mm_children);  in vdev_mirror_io_done()
772 		mc = &mm->mm_child[c];  in vdev_mirror_io_done()
781 	if (zio->io_flags & ZIO_FLAG_SCRUB && !mm->mm_resilvering) {  in vdev_mirror_io_done()
784 			best_abd = mm->mm_child[last_good_copy].mc_abd;  in vdev_mirror_io_done()
800 				mc = &mm->mm_child[c];  in vdev_mirror_io_done()
835 				mc = &mm->mm_child[c];  in vdev_mirror_io_done()
847 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
848 			mc = &mm->mm_child[c];  in vdev_mirror_io_done()
856 		zio->io_error = vdev_mirror_worst_error(mm);  in vdev_mirror_io_done()
863 	    ((zio->io_flags & ZIO_FLAG_SCRUB) && mm->mm_resilvering))) {  in vdev_mirror_io_done()
867 		for (c = 0; c < mm->mm_children; c++) {  in vdev_mirror_io_done()
875 			mc = &mm->mm_child[c];  in vdev_mirror_io_done()