static void page_cache_pipe_buf_release(struct pipe_inode_info *pipe,
					struct pipe_buffer *buf)
{
	put_page(buf->page);
	buf->flags &= ~PIPE_BUF_FLAG_LRU;
}
static void page_cache_pipe_buf_release(struct pipe_inode_info *pipe,
					struct pipe_buffer *buf)
{
	put_page(buf->page);
	buf->flags &= ~PIPE_BUF_FLAG_LRU;
}