write_cow_header 18 arch/um/drivers/cow.h extern int write_cow_header(char *cow_file, int fd, char *backing_file, write_cow_header 410 arch/um/drivers/cow_user.c err = write_cow_header(cow_file, fd, backing_file, sectorsize, write_cow_header 726 arch/um/drivers/ubd_kern.c err = write_cow_header(file, fd, *backing_file_out,