On Wed, Jul 19, 2023 at 01:54:14PM -0600, Jens Axboe wrote: > Whether we have a write back cache and are using FUA or don't have > a write back cache at all is the same situation. Treat them the same. This looks correct, but I think the IOMAP_DIO_WRITE_FUA is rather misnamed now which could lead to confusion. The comment in __iomap_dio_rw when checking the flag and clearing IOMAP_DIO_NEED_SYNC also needs a little update to talk about writethrough semantics and not just FUA now.
