[PATCH 0/4] xfs: sb_meta_uuid fixes

[Dave Chinner <david@xxxxxxxxxxxxx>]

Hi folks,

These are fixes to problems I found int eh sb_meta_uuid changes I
recently pushed to for-next. They were all found by augmenting
_scratch_mkfs_xfs in xfstests with an extra command to change the
UUID after the filesystem had been created. I think we should
probably do that randomly in xfstests to get coverage of both
cases. No-one shoul dhave been exposed to these yet, because I
haven't released a userspace that can change the UUID yet on v5
filesystems.

Cheers,

Dave.