On Tue, Aug 29, 2017 at 2:26 PM, Christoph Hellwig <hch@xxxxxx> wrote: > Call me nitpicky, but.. > > First this really should be three patches, one for the DAX code, one > for the VFS code and one for XFS. The DAX and XFS bits looks fine to > me: > > Reviewed-by: Christoph Hellwig <hch@xxxxxx> > > But I'm a little worried about stuffing more DAX knowledge into the > block mount_bdev helper. For now it's probably ok as everything > else would involve a lot of refactoring and/or duplication, but > I'm generally not too happy about it. I think this is why we ended up with calling dax_get_by_host() in ->iomap_begin() because the mount_bdev() touches I started with back when this was first introduced were not very palatable. I agree with the direction to move to mount_dax() in the future. I can respin this into three patches and a TODO comment about how we want to kill the dax knowledge in mount_bdev() going forward.