On Mon, Jan 22, 2024 at 11:27:15AM -0700, Keith Busch wrote: > > + q->limits.max_user_discard_sectors = max_discard_bytes >> SECTOR_SHIFT; > > + q->limits.max_discard_sectors = > > + min_not_zero(q->limits.max_hw_discard_sectors, > > + q->limits.max_user_discard_sectors); > > Shouldn't writing 0 disable discards? I mirror the max_user_sectors behavior here, where 0 disables the user limiting. But yes, that would be a behavior change.