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?
Thanks,
-Toshi