file_reader        11 arch/um/drivers/cow.h extern int file_reader(__u64 offset, char *buf, int len, void *arg);
file_reader       579 arch/um/drivers/ubd_kern.c 	err = read_cow_header(file_reader, &fd, &version, &backing_file, \
file_reader       708 arch/um/drivers/ubd_kern.c 	err = read_cow_header(file_reader, &fd, &version, &backing_file, &mtime,