commit5b0fab5089upstream. Fix dm_table_supports_dax() and invert logic of both iterate_devices_callout_fn so that all devices' DAX capabilities are properly checked. Fixes:545ed20e6d("dm: add infrastructure for DAX support") Cc: stable@vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> [jeffle: no dax write cache, no dax synchronous] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>