__splice_from_pipe
ret = __splice_from_pipe(pipe, &sd, pipe_to_sg);
return __splice_from_pipe(pipe, sd, nfsd_splice_actor);
ret = __splice_from_pipe(pipe, &sd, pipe_to_user);
EXPORT_SYMBOL(__splice_from_pipe);
ret = __splice_from_pipe(pipe, &sd, actor);
ssize_t __splice_from_pipe(struct pipe_inode_info *pipe,