[LU-14038] don't allow several replies into single reply buffer

• Type: Bug
• Resolution: Not a Bug
• Priority: Major
• Severity: 3
• Assignee: Alexey Lyashkov
• Reporter: Alexey Lyashkov

Description

reply buffer unlink isn't atomically after early reply feature landing.
It open a some races when buffer may modified while access in case LNetMDUnlink in flight.
Lets fix this.