298 ssize_t generic_file_splice_read(struct file *in, loff_t *ppos,  in generic_file_splice_read()  argument
309 	init_sync_kiocb(&kiocb, in);  in generic_file_splice_read()
311 	ret = call_read_iter(in, &kiocb, &to);  in generic_file_splice_read()
314 		file_accessed(in);  in generic_file_splice_read()
773 static long do_splice_to(struct file *in, loff_t *ppos,  in do_splice_to()  argument
780 	if (unlikely(!(in->f_mode & FMODE_READ)))  in do_splice_to()
787 	ret = rw_verify_area(READ, in, ppos, len);  in do_splice_to()
794 	if (unlikely(!in->f_op->splice_read))  in do_splice_to()
795 		return warn_unsupported(in, "read");  in do_splice_to()
796 	return in->f_op->splice_read(in, ppos, pipe, len, flags);  in do_splice_to()
812 ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,  in splice_direct_to_actor()  argument
826 	i_mode = file_inode(in)->i_mode;  in splice_direct_to_actor()
870 		ret = do_splice_to(in, &pos, pipe, len, flags);  in splice_direct_to_actor()
909 	file_accessed(in);  in splice_direct_to_actor()
956 long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,  in do_splice_direct()  argument
979 	ret = splice_direct_to_actor(in, &sd, direct_splice_actor);  in do_splice_direct()
1008 long splice_file_to_pipe(struct file *in,  in splice_file_to_pipe()  argument
1018 		ret = do_splice_to(in, offset, opipe, len, flags);  in splice_file_to_pipe()
1028 long do_splice(struct file *in, loff_t *off_in, struct file *out,  in do_splice()  argument
1036 	if (unlikely(!(in->f_mode & FMODE_READ) ||  in do_splice()
1040 	ipipe = get_pipe_info(in, true);  in do_splice()
1051 		if ((in->f_flags | out->f_flags) & O_NONBLOCK)  in do_splice()
1075 		if (in->f_flags & O_NONBLOCK)  in do_splice()
1094 			if (!(in->f_mode & FMODE_PREAD))  in do_splice()
1098 			offset = in->f_pos;  in do_splice()
1104 		ret = splice_file_to_pipe(in, opipe, &offset, len, flags);  in do_splice()
1106 			in->f_pos = offset;  in do_splice()
1116 static long __do_splice(struct file *in, loff_t __user *off_in,  in __do_splice()  argument
1125 	ipipe = get_pipe_info(in, true);  in __do_splice()
1144 	ret = do_splice(in, __off_in, out, __off_out, len, flags);  in __do_splice()
1336 	struct fd in, out;  in SYSCALL_DEFINE6()  local
1346 	in = fdget(fd_in);  in SYSCALL_DEFINE6()
1347 	if (in.file) {  in SYSCALL_DEFINE6()
1350 			error = __do_splice(in.file, off_in, out.file, off_out,  in SYSCALL_DEFINE6()
1354 		fdput(in);  in SYSCALL_DEFINE6()
1665 long do_tee(struct file *in, struct file *out, size_t len, unsigned int flags)  in do_tee()  argument
1667 	struct pipe_inode_info *ipipe = get_pipe_info(in, true);  in do_tee()
1671 	if (unlikely(!(in->f_mode & FMODE_READ) ||  in do_tee()
1680 		if ((in->f_flags | out->f_flags) & O_NONBLOCK)  in do_tee()
1700 	struct fd in, out;  in SYSCALL_DEFINE4()  local
1710 	in = fdget(fdin);  in SYSCALL_DEFINE4()
1711 	if (in.file) {  in SYSCALL_DEFINE4()
1714 			error = do_tee(in.file, out.file, len, flags);  in SYSCALL_DEFINE4()
1717  		fdput(in);  in SYSCALL_DEFINE4()