On Tue, Jun 25, 2019 at 09:49:21AM +1000, Dave Chinner wrote: > > +#undef TRACE_SYSTEM > > +#define TRACE_SYSTEM iomap > > Can you add a comment somewhere here that says these tracepoints are > volatile and we reserve the right to change them at any time so they > don't form any sort of persistent UAPI that we have to maintain? Sure. Note that we don't have any such comment in xfs either..