coredump_mark
static_assert(sizeof(enum coredump_mark) == sizeof(__u32));
static inline bool coredump_sock_mark(struct file *file, enum coredump_mark mark)
bool read_marker(int fd, enum coredump_mark mark);
enum coredump_mark mark = COREDUMP_MARK_REQACK;
bool read_marker(int fd, enum coredump_mark mark)