Storing page files on a RAM disk isn't officially supported, and it is generally a bad idea. If you have enough RAM, simply turn the page file off - it is not needed.
As you may know, the point of the page file is to swap out memory pages from RAM to a file on the disk when more memory is required. In other words, a page file can be seen as a RAM extension. By placing a page file back into memory (on a RAM disk), you would attempt to extend the resource using the resource itself. Therefore there is no benefit in doing so, only added complications. A more technical explanation can be found in this article:
Why it is bad to store the page file on a RAM disk.