passing information from file system filter to disk filter

[Restarting the thread in NTFSD as per Peter’s suggestion as it seems like more of a file system question]

I need to tag a file access (read/write) request in my file system filter driver so that this request when reaches (if ever) the underlying disk filter driver, the disk filter is able to make use of this tag. Any suggestions on how can I do it? The reason for this need is that at file system filter level I have more file specific information which is not available at the disk filter driver level. Any suggestions will be appreciated.