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From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Tue, 8 Sep 2009 08:54:15 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
	zfs_vfsops.c
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pjd         2009-09-08 08:54:15 UTC

  FreeBSD src repository

  Modified files:
    sys/cddl/contrib/opensolaris/uts/common/fs/zfs zfs_vfsops.c 
  Log:
  SVN rev 196965 on 2009-09-08 08:54:15Z by pjd
  
  Fix reference count leak for a case where snapshot's mount point is updated.
  Such situation is not supported.
  
  This problem was triggered by something like this:
  
          # zpool create tank da0
          # zfs snapshot tank@snap
          # cd /tank/.zfs/snapshot/snap  (this will mount the snapshot)
          # cd
          # mount -u nosuid /tank/.zfs/snapshot/snap  (refcount leak)
          # zpool export tank
          cannot export 'tank': pool is busy
  
  MFC after:      1 week
  
  Revision  Changes    Path
  1.22      +7 -0      src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c