[LU-1072] grouplock glimpse callback on mdt do multiple free

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: Oleg Drokin
• Reporter: CEA

Description

when mdt takes a grouplock (mdd_file_lock()) it allocates an ma and free it in the glimpse grouplock callback.
the cb is called for each stripe so the ma is freed multiple time
the proposed patch (gerrit will follow) is to use a global ma structure allocated out of the lock/unlock sequence