306 __generic_file_splice_read(struct file *in, loff_t *ppos,  in __generic_file_splice_read()  argument
310 	struct address_space *mapping = in->f_mapping;  in __generic_file_splice_read()
346 		page_cache_sync_readahead(mapping, &in->f_ra, in,  in __generic_file_splice_read()
403 			page_cache_async_readahead(mapping, &in->f_ra, in,  in __generic_file_splice_read()
441 			error = mapping->a_ops->readpage(in, page);  in __generic_file_splice_read()
499 	in->f_ra.prev_pos = (loff_t)index << PAGE_CACHE_SHIFT;  in __generic_file_splice_read()
522 ssize_t generic_file_splice_read(struct file *in, loff_t *ppos,  in generic_file_splice_read()  argument
529 	if (IS_DAX(in->f_mapping->host))  in generic_file_splice_read()
530 		return default_file_splice_read(in, ppos, pipe, len, flags);  in generic_file_splice_read()
532 	isize = i_size_read(in->f_mapping->host);  in generic_file_splice_read()
540 	ret = __generic_file_splice_read(in, ppos, pipe, len, flags);  in generic_file_splice_read()
543 		file_accessed(in);  in generic_file_splice_read()
606 ssize_t default_file_splice_read(struct file *in, loff_t *ppos,  in default_file_splice_read()  argument
660 	res = kernel_readv(in, vec, spd.nr_pages, *ppos);  in default_file_splice_read()
1124 static long do_splice_to(struct file *in, loff_t *ppos,  in do_splice_to()  argument
1132 	if (unlikely(!(in->f_mode & FMODE_READ)))  in do_splice_to()
1135 	ret = rw_verify_area(READ, in, ppos, len);  in do_splice_to()
1139 	if (in->f_op->splice_read)  in do_splice_to()
1140 		splice_read = in->f_op->splice_read;  in do_splice_to()
1144 	return splice_read(in, ppos, pipe, len, flags);  in do_splice_to()
1160 ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,  in splice_direct_to_actor()  argument
1174 	i_mode = file_inode(in)->i_mode;  in splice_direct_to_actor()
1216 		ret = do_splice_to(in, &pos, pipe, len, flags);  in splice_direct_to_actor()
1255 	file_accessed(in);  in splice_direct_to_actor()
1304 long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,  in do_splice_direct()  argument
1327 	ret = splice_direct_to_actor(in, &sd, direct_splice_actor);  in do_splice_direct()
1342 static long do_splice(struct file *in, loff_t __user *off_in,  in do_splice()  argument
1351 	ipipe = get_pipe_info(in);  in do_splice()
1358 		if (!(in->f_mode & FMODE_READ))  in do_splice()
1409 			if (!(in->f_mode & FMODE_PREAD))  in do_splice()
1414 			offset = in->f_pos;  in do_splice()
1417 		ret = do_splice_to(in, &offset, opipe, len, flags);  in do_splice()
1420 			in->f_pos = offset;  in do_splice()
1684 	struct fd in, out;  in SYSCALL_DEFINE6()  local
1691 	in = fdget(fd_in);  in SYSCALL_DEFINE6()
1692 	if (in.file) {  in SYSCALL_DEFINE6()
1693 		if (in.file->f_mode & FMODE_READ) {  in SYSCALL_DEFINE6()
1697 					error = do_splice(in.file, off_in,  in SYSCALL_DEFINE6()
1703 		fdput(in);  in SYSCALL_DEFINE6()
1986 static long do_tee(struct file *in, struct file *out, size_t len,  in do_tee()  argument
1989 	struct pipe_inode_info *ipipe = get_pipe_info(in);  in do_tee()
2015 	struct fd in;  in SYSCALL_DEFINE4()  local
2022 	in = fdget(fdin);  in SYSCALL_DEFINE4()
2023 	if (in.file) {  in SYSCALL_DEFINE4()
2024 		if (in.file->f_mode & FMODE_READ) {  in SYSCALL_DEFINE4()
2028 					error = do_tee(in.file, out.file,  in SYSCALL_DEFINE4()
2033  		fdput(in);  in SYSCALL_DEFINE4()