rem: printf("cache: released an iovec I don't own (iov 0x%x)\n", iov);
add: printf("cache: released an iovec I don't own (iov %p)\n", iov);
context: release_iovec_array(struct iovec *iov){    int i;    LOCK(iovec_lock);    for(i=0; i < MAX_IOVECS; i++) {        if (iov == iovec_pool[i])            break;    }    if (i < MAX_IOVECS)        iovec_used[i] = 0;    else                     /* uh-oh */        printf("cache: released an iovec I don't own (iov 0x%x)\n", iov);        UNLOCK(iovec_lock);}