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From: Attilio Rao <attilio@FreeBSD.org>
Date: Sat, 3 Oct 2009 15:02:55 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/kern kern_lock.c
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attilio     2009-10-03 15:02:55 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_lock.c 
  Log:
  SVN rev 197735 on 2009-10-03 15:02:55Z by attilio
  
  When releasing a lockmgr held in shared way we need to use a write memory
  barrier in order to avoid, on architectures which doesn't have strong
  ordered writes, CPU instructions reordering.
  
  Diagnosed by:   fabio
  
  Revision  Changes    Path
  1.149     +3 -3      src/sys/kern/kern_lock.c