---
- branch: MAIN
  date: Sat Apr  9 23:46:10 UTC 2022
  files:
  - new: '1.99'
    old: '1.98'
    path: src/sys/kern/kern_mutex.c
    pathrev: src/sys/kern/kern_mutex.c@1.99
    type: modified
  id: 20220409T234610Z.cd6580c8a0a655b052661a5d3dd675f84a69aa58
  log: |
    mutex(9): Convert to membar_acquire/release.

    Except for setting the waiters bit -- not sure if this is actually
    required to be store-before-load/store.  Seems unlikely -- surely
    we'd have seen some serious bug by now if not, because membar_enter
    has failed to guarantee that on x86! -- but I'm leaving it for now
    until I have time to think enough about it to be sure one way or
    another.
  module: src
  subject: 'CVS commit: src/sys/kern'
  unixtime: '1649547970'
  user: riastradh