On Wed, Jun 14, 2017 at 01:24:43PM -0400, Jeff Layton wrote:

In this smaller set, it's only really used for DAX.

DAX only is implemented by three filesystems, please just fix them
up in one go.

sync_file_range: ->fsync isn't called directly there, and I think we
probably want similar semantics to fsync() for it

sync_file_range is only supposed to sync data, so it should not call
->fsync.

JBD2: will try to re-set the error after clearing it with
filemap_fdatawait. That's problematic with the new infrastructure so we
need some way to avoid it.

JBD2 only has two users, please fix them up in one go.