On Wed, Feb 21, 2018 at 12:40:00PM +0100, Greg Kroah-Hartman wrote: > On Mon, Feb 19, 2018 at 03:26:37PM +0200, Tommi Rantala wrote: > > > > OK to backport it? > > I tested it briefly in 4.9, seems to work. It looks sane, but it would be nice if I can get people who are backporting ext4 patches to make sure there are no regressions using one of kvm-xfstests[1] or gce-xfstests[2][3]..... [1] https://github.com/tytso/xfstests-bld/blob/master/Documentation/kvm-xfstests.md [2] https://github.com/tytso/xfstests-bld/blob/master/Documentation/gce-xfstests.md [3] https://thunk.org/gce-xfstests I do run regression tests[4] on stable kernels when I have time, but it scales much better when other people can help. [4] https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/tag/?h=ext4-4.9.54-1 > I need an ack from the ext4 maintainers before I can take this... Greg, you can go ahead and take this, but in the future I'd appreciate it if ext4 backporters could at least run a smoke test (which takes less than 15 minutes on GCE) before and after the patch, and report no test regressions. More aggressive testers can and should run "{kvm,gce}-xfstests auto" which take overnight, and the really adventurous can use the lightweight test manager (ltm) which will break up the test run the job across multiple VM's and do the job in about 2.5 hours or so. :-) - Ted