coredump_ack
static inline bool coredump_sock_recv(struct file *file, struct coredump_ack *ack, size_t size, int flags)
.size_ack = sizeof(struct coredump_ack),
struct coredump_ack ack = {};
struct coredump_ack ack;
size_ack = sizeof(struct coredump_ack) < req->size_ack ?
sizeof(struct coredump_ack) :