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From: Rick Macklem <rmacklem@FreeBSD.org>
Date: Sat, 23 Apr 2011 11:22:48 +0000 (UTC)
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Subject: cvs commit: src/sys/kern vfs_subr.c
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rmacklem    2011-04-23 11:22:48 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_subr.c 
  Log:
  SVN rev 220967 on 2011-04-23 11:22:48Z by rmacklem
  
  Fix a LOR in vfs_busy() where, after msleeping, it would lock
  the mutexes in the wrong order for the case where the
  MBF_MNTLSTLOCK is set. I believe this did have the
  potential for deadlock. For example, if multiple nfsd threads
  called vfs_busyfs(), which calls vfs_busy() with MBF_MNTLSTLOCK.
  Thanks go to pho for catching this during his testing.
  
  Tested by:      pho
  Submitted by:   kib
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.808     +2 -1      src/sys/kern/vfs_subr.c