tag	line	file	source code
newfd	36	fs/fcntl.c	int sys_dup2(unsigned int oldfd, unsigned int newfd)
newfd	40	fs/fcntl.c	if (newfd == oldfd)
newfd	41	fs/fcntl.c	return newfd;
newfd	42	fs/fcntl.c	sys_close(newfd);
newfd	43	fs/fcntl.c	return dupfd(oldfd,newfd);