Symbol: zio_child_cb
usr/src/cmd/mdb/common/modules/zfs/zfs.c
2568
static int zio_child_cb(uintptr_t addr, const void *unknown, void *arg);
usr/src/cmd/mdb/common/modules/zfs/zfs.c
2645
if (mdb_pwalk("list", zio_child_cb, zpa, laddr) != 0) {