ksys_fchown       733 fs/open.c      	return ksys_fchown(fd, user, group);
ksys_fchown      1242 include/linux/syscalls.h int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
ksys_fchown       338 init/initramfs.c 				ksys_fchown(wfd, uid, gid);
ksys_fchown        35 kernel/uid16.c 	return ksys_fchown(fd, low2highuid(user), low2highgid(group));