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Using Driver Allocated IRP pool, in this case IRP completion routine can return STATUS_SUCCESS

parsaparsa Member Posts: 67
edited May 2022 in NTFSD

Hi All,

I am creating IRP pool using LookAsideList and using it in my driver since IRP is being used frequently in my source.
I have a question regarding the return status from the IRP completion.

When driver maintained IRP pool was used, is it valid for the completion routine to return STATUS_SUCCESS to the IO manager?
After reading this article from OSR^id=83.htm it seems returning STATUS_SUCCESS is not a valid return code when driver created irp pool used.

Snippet from the OSR article
"One common instance where a completion routine is used is when a driver creates and manages its own IRP pool. In this case, the I/O completion routine traps the IRP, returns it to the driver’s private IRP pool, and then returns STATUS_MORE_PROCESSING _REQUIRED to the I/O Manager. This causes the I/O Manager to immediately cease processing the IRP completion and leaves the IRP with the driver."


Post edited by Peter_Viscarola_(OSR) on


  • Peter_Viscarola_(OSR)Peter_Viscarola_(OSR) Administrator Posts: 9,159

    As you most certainly already know, from reading the rules of the forum, cross-posting is not allowed.

    By definition, this is a cross-post.

    Therefore, I am locking this thread.

    Please don't repeat this behavior.


    Peter Viscarola

This discussion has been closed.

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