On Tue, Oct 22, 2024 at 12:13:12AM -0700, Christoph Hellwig wrote: > On Tue, Oct 22, 2024 at 09:10:18AM +0200, Peter Zijlstra wrote: > > Ah, well, the thing that got us here is that we (Andrii and me) wanted > > to use -1 as an 'invalid' value to indicate SRCU is not currently in > > use. > > > > So it all being int is really rather convenient :-) > > Then please document that use. Maybe even with a symolic name for > -1 that clearly describes these uses. Would this work? #define SRCU_INVALID_INDEX -1 Whatever the name, maybe Peter and Andrii define this under #ifndef right now, and we get it into include/linux/srcu.h over time. Or is there a better way? Or name, for that matter. Thanx, Paul
