zfs_all_blkstats_t
zfs_all_blkstats_t stats;
mdb_vread(&stats, sizeof (zfs_all_blkstats_t), addr) == -1) {
kmem_free(dp->dp_blkstats, sizeof (zfs_all_blkstats_t));
count_block(dsl_scan_t *scn, zfs_all_blkstats_t *zab, const blkptr_t *bp)
kmem_alloc(sizeof (zfs_all_blkstats_t), KM_SLEEP);
zfs_all_blkstats_t *dp_blkstats;