On Wed, 2026-02-04 at 15:22 -0600, Frederick Lawler wrote: > That said, I think Mimi pointed out in an email [2] where multi-grain > file systems are impacted regardless of stacked fs or not due to the last > writer check. > > I don't recall coming across that in my tests, but perhaps I did that > specific test wrong? To be sure, I created the C program, and on the VM, > created a XFS disk, mounted it on loopback, ran the rdwr program on > "somefile" multiple times, and only got 1 audit log for it, until I > mutated it with touch, and only got 2 hits: original + after mutation > after running the program multiple times. > > I'm not sure what's going on there, so I'll look into that a bit more, > but so far the impact is stacked file systems & multigrain ctime AFAIK.
Make sure you're testing without your patch set applied or at least the last patch. Mimi
