From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com ([209.132.183.28]:47320 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751300AbdDROt5 (ORCPT ); Tue, 18 Apr 2017 10:49:57 -0400 Date: Tue, 18 Apr 2017 22:49:53 +0800 From: Xiong Zhou Subject: Re: [PATCH v4 2/4] generic: test mmap io fom DAX to non-DAX Message-ID: <20170418144953.4zblejq7blq5622p@XZHOUW.usersys.redhat.com> References: <1492008380-29164-1-git-send-email-xzhou@redhat.com> <1492413255-11146-1-git-send-email-xzhou@redhat.com> <1492413255-11146-3-git-send-email-xzhou@redhat.com> <20170418101226.GA15898@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170418101226.GA15898@infradead.org> Sender: fstests-owner@vger.kernel.org To: Christoph Hellwig Cc: Xiong Zhou , fstests@vger.kernel.org, ross.zwisler@linux.intel.com, dan.j.williams@intel.com, jmoyer@redhat.com, eguan@redhat.com List-ID: On Tue, Apr 18, 2017 at 03:12:26AM -0700, Christoph Hellwig wrote: > On Mon, Apr 17, 2017 at 03:14:13PM +0800, Xiong Zhou wrote: > > Mount TEST_DEV as non-DAX, SCRATCH_DEV as DAX, then > > do mmap DIO from DAX to non-DAX. > > > > This test is split from generic/413. Since DIO from DAX > > to non-DAX is only supported/doable when device underneath > > has memory(struct page) backend. > > > > By ndctl looking at SCRATCH_DEV, skip this test if it is > > not in "memory mode". > > DAX devices don't need to be something using NFIT, so I don't think this > method is correct. Ya. This commit message needs update. I'm trying another method, not being that nvdimm specific.