Re: [RFC v2] [PATCH 0/10] DAX page fault locking

On Tue, 2016-03-22 at 13:32 -0600, Ross Zwisler wrote: > On Mon, Mar 21, 2016 at 02:22:45PM +0100, Jan Kara wrote: > > [Sorry for repost but I accidentally sent initial email without > > patches] > > > > Hello, > > > > this is my second attempt at DAX page fault locking rewrite. Things now > > work reasonably well, it has survived full xfstests run on ext4. I > > guess I need to do more mmap targetted tests to unveil issues. Guys > > what do you used for DAX testing? > > I typically use xfstests for regression testing.  If we can come up with > new generally useful regression tests, especially ones concerning mmap > races, that would be awesome.  I guess it's just a choice between adding > them somewhere in xfstests or somewhere else like with the unit tests in > ndctl. Brian Boylston wrote a test for mmap race conditions and posted it before.  This test was very useful to fix the data corruption issue we had before. http://www.spinics.net/lists/linux-ext4/msg49876.html If there is anything we can do to make this test useful as regression tests?