---
- branch: MAIN
  date: Tue Apr 15 09:50:45 UTC 2014
  files:
  - new: '1.30'
    old: '1.29'
    path: src/sys/kern/vfs_trans.c
    pathrev: src/sys/kern/vfs_trans.c@1.30
    type: modified
  id: 20140415T095045Z.9364b02b525656a4590640a68cf546c2e526c977
  log: |
    Fix a deadlock where one thread exits, enters fstrans_lwp_dtor()
    and wants fstrans_lock.  This thread holds the proc_lock.
    Another thread holds fstrans_lock and runs pserialize_perform().
    As the first thread holds the proc_lock, timeouts are blocked and
    the second thread blocks forever in kpause().

    Change fstrans_lwp_dtor() to invalidate, but not free its info
    structs.  No need to take fstrans_lock.

    Change fstrans_get_lwp_info() to reuse invalidated info before
    trying to allocate a new one.
  module: src
  subject: 'CVS commit: src/sys/kern'
  unixtime: '1397555445'
  user: hannken