Re: [PATCH v2 11/15] blktrace: add block trace commands for zone operations

On Tue, Oct 07, 2025 at 01:08:00PM +0000, Johannes Thumshirn wrote:
> Sure for the old commands everything is still in the lower 32bits, this 
> has the nice property that we don't need to duplicate all the code for 
> v1 and v2.

I don't think you need to duplicate anything, just have a little
function that maps from the free-form v2 commands and flags to the
v1 field.  Preferably including a mapping of all unsupported ones to
a catchall unsupported command and flag each to indicate that the
trace includes something only visible with v2.