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From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Thu, 5 Feb 2009 08:46:18 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/kern vfs_syscalls.c
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trasz       2009-02-05 08:46:18 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_syscalls.c 
  Log:
  SVN rev 188141 on 2009-02-05 08:46:18Z by trasz
  
  In some situations, mnt_lockref could go negative due to vfs_unbusy() being
  called without calling vfs_busy() first.  This made umount(8) hang waiting
  for mnt_lockref to become zero, which would never happen.
  
  Reviewed by:    kib
  Approved by:    rwatson (mentor)
  Reported by:    pho
  Found with:     stress2
  Sponsored by:   FreeBSD Foundation
  
  Revision  Changes    Path
  1.470     +5 -3      src/sys/kern/vfs_syscalls.c