What's up with "locks: change POSIX lock ownership on execve when files_struct is displaced"?

From what I can tell, the patch was last submitted on March 17th, with

There is quite of noise currently with xfstests failures. In addition to the fsync/EIO failures, there is also something going on with dm-thin, etc. And then there's generic/484, which is failing for all ext4 configs.

According to test script for generic/484, the test failure is fixed by the patch:

locks: change POSIX lock ownership on execve when files_struct is displaced

From what I can tell, the patch was last submitted on March 17th, with comments from Eric Beiderman on April 2nd and 3rd --- but nothing since then:

      https://lists.gt.net/linux/kernel/2941364

Are you still hoping to land this patch for 4.17?

Thanks, regards,

- Ted

No, it's not suitable for inclusion. After I sent the above patch, I realized that it would break some important filesystems (like NFS).

Eric sounded like he had the best approach to fix it, but it's non- trivial and somewhat outside the bounds of the locking code. I haven't had time to attempt a patch for it so far.