[LU-2224] Missing ZFS osd_commit_async() locking

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.4.0
• Labels: zfs
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Brian Behlendorf

Description

The ZFS osd_commit_async() implementation in master never properly acquired the tx->tx_sync_lock() mutex. Presumably this code is either:

1) Never/rarely called because it should trigger an ASSERT in the SPL, or
2) The SPL/ZFS debugging is disabled in the automated testing

I'll follow up shortly with the trivial fix.