Fix VERIFY(!zil_replaying(zilog, tx)) panic.

[pjd]

The zfs_log_clone_range() function is never called from the zfs_clone_range_replay() function, so I assumed it is safe to assert that zil_replaying() is never TRUE here. It turns out zil_replaying() also returns TRUE when the sync property is set to disabled.

Fix the problem by just returning if zil_replaying() returns TRUE.

Reported by: Florian Smeets Signed-off-by: Pawel Jakub Dawidek [email protected]

Motivation and Context

Description

How Has This Been Tested?

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Performance enhancement (non-breaking change which improves efficiency)
• [ ] Code cleanup (non-breaking change which makes code smaller or more readable)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Library ABI change (libzfs, libzfs_core, libnvpair, libuutil and libzfsbootenv)
• [ ] Documentation (a change to man pages or other documentation)

Checklist:

• [x] My code follows the OpenZFS code style requirements.
• [ ] I have updated the documentation accordingly.
• [x] I have read the contributing document.
• [ ] I have added tests to cover my changes.
• [ ] I have run the ZFS Test Suite with this change applied.
• [x] All commit messages are properly formatted and contain Signed-off-by.