[LU-8612] Sync-on-Lock-Cancel locks should be handled per MDT

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.9.0
• Affects Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: Lai Siyao
• Reporter: Lai Siyao

Description

Sync-on-Lock-Cancel locks are cross-MDT locks, now it's maintained in a global list, while it should be handled per target(MDT), otherwise it can't guarantee transaction commit before lock cancel.