On Thu, Oct 17, 2024 at 09:44:39AM -0600, Keith Busch wrote: > I'm replying just to make sure I understand what you're saying: > > If we send per IO hints on a file, we could have interleaved hot and > cold pages at various offsets of that file, so the filesystem needs an > efficient way to allocate extents and track these so that it doesn't > interleave these in LBA space. I think that makes sense. That's a little simplified, but yes. > We can add a fop_flags and block/fops.c can be the first one to turn it > on since that LBA access is entirely user driven. Yes, that's my main request on the per-I/O hint interface. Now we just need to not dumb down the bio level interface to five temeperature level and just expose the different write streams and we can all have a happy Kumbaya.
