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

On 10/8/25 8:14 AM, hch wrote:

On Tue, Oct 07, 2025 at 01:08:00PM +0000, Johannes Thumshirn wrote:

quoted

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.

So I've tried making a translation function (which is the trivial part) 
but then it's a game of whack-a-mole to unbreak compilation, ftrace, etc..

I think it's not really worth the effort.