On Mon, Jan 30, 2017 at 10:29:12AM -0800, Dan Williams wrote: > On Mon, Jan 30, 2017 at 4:26 AM, Christoph Hellwig <hch@xxxxxx> wrote: > > On Sat, Jan 28, 2017 at 12:37:14AM -0800, Dan Williams wrote: > >> This is in preparation for removing the ->direct_access() method from > >> block_device_operations. > > > > I don't think mount_bdev has any business knowing about DAX. > > Just call dax_get_by_host manually from the affected file systems for > > now, and in the future we can have a pure-DAX mount_dax helper. > > Ok, since we already need dax_get_by_host() in the blkdev_writepages() > path I can sprinkle a few more of those calls and leave mount_bdev > alone. Huh? I thought we stopped using DAX I/O for the block device nodes a while ago?
