Pending IRPs in filter dispatch

NTFSD
1

Dear All!

I need to queue all the incoming write requests in my filter driver
attached to partitions on harddrives. Which write IRPs I cannot pend and
must process synchronously? Can I pend IRPs with the
IRP_SYNCHRONOUS_PAGING_IO flag?

Regards,
Max Lyadvinsky

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2

> I need to queue all the incoming write requests in my filter driver

attached to partitions on harddrives. Which write IRPs I cannot pend and
must process synchronously? Can I pend IRPs with the
IRP_SYNCHRONOUS_PAGING_IO flag?

You can pend ANY IRPs. We have the product which does this.
IRP_SYNCHRONOUS_PAGING_IO is for file IO IRP, not for disk IO.

(the disk IRP and the FS IRP can be different - the FSD could allocate the
separate IRP for disk IO instead of reusing the file IO IRP).

Max

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