On Mon, Jan 24, 2022 at 10:03:32AM +1100, Dave Chinner wrote: > > > > /* 0xa0 */ > > > > /* File range alignment needed for best performance, in bytes. */ > > __u32 stx_dio_fpos_align_opt; > > This is a common property of both DIO and buffered IO, so no need > for it to be dio-only property. > > __u32 stx_offset_align_optimal; > Looking at this more closely: will stx_offset_align_optimal actually be useful, given that st[x]_blksize already exists?