[LU-1832] double list add in ldlm

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.4.0
• Labels: patch
• Assignee: Keith Mannthey (Inactive)
• Reporter: Peng Tao

Description

When kernel has CONFIG_DEBUG_LIST on, there are some warnings about double list add in ldlm code. It is because ldlm_granted_list_add_lock() may add a lock to its own places. It is ok to do so but it is better to change code to suppress such warnings so we can use CONFIG_DEBUG_LIST to detect other bugs.