On 9/24/18 12:00 PM, Christopher Lameter wrote: > On Mon, 24 Sep 2018, Jens Axboe wrote: > >> The situation is making me a little uncomfortable, though. If we export >> such a setting, we really should be honoring it... > > Various subsystems create custom slab arrays with their particular > alignment requirement for these allocations. Oh yeah, I think the solution is basic enough for XFS, for instance. They just have to error on the side of being cautious, by going full sector alignment for memory... -- Jens Axboe