generic_file_splice_write — splice data from a pipe to a file
ssize_t generic_file_splice_write
(struct pipe_inode_info * pipe, struct file * out, loff_t * ppos, size_t len, unsigned int flags);
pipe info
file to write to
position in out
number of bytes to splice
splice modifier flags
Will either move or copy pages (determined by flags options) from the given pipe inode to the given file.