On Thu, Apr 03, 2025 at 04:07:04PM +0100, John Garry wrote: > So I am thinking one of these: > a. stx_atomic_write_unit_max_dev > b. stx_atomic_write_unit_max_bdev > c. stx_atomic_write_unit_max_align > d. stx_atomic_write_unit_max_hw > > The terms dev (or device) and bdev are already used in the meaning of some > members in struct statx, so not too bad. However, when we support large > atomic writes for XFS rtvol, the bdev atomic write limit and rtextsize > would influence this value (so just bdev might be a bit misleading in the > name). Don't. Especially when you have a natively out of write file system that optimized case will not involve the usual hardware offload.