ov_magic
op->ov_magic = MAGIC;
ASSERT(op->ov_magic == MAGIC); /* make sure it was in use */
if (op->ov_magic != MAGIC)
if (op->ov_magic == MAGIC) {
op->ov_magic = MAGIC;
ov->ov_magic = AMAGIC;
op = opx->ov_magic == AMAGIC ? (void *)((caddr_t)cp - opx->ov_index) :
ASSERT(op->ov_magic == MAGIC); /* make sure it was in use */
if (op->ov_magic != MAGIC)
if (op->ov_magic != MAGIC) {