DEVFS - Add required vget when disassociating a vnode from a node.

[Matthew Dillon]

commit e23485a5fa4ee8679a681c1dead71f925f14965f
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Fri Aug 7 17:35:36 2009 -0700

    DEVFS - Add required vget when disassociating a vnode from a node.
    
    * We have to protect the vnode when disconnecting the rdev and
      disassociating it from the devfs_node.
    
    * This also has the side effect of properly cycling the vnode refs
      so the namecache gets cleaned up when a node is removed.  Otherwise
      the namecache entry will be left intact, resolved to the now dead
      vnode.

Summary of changes:
 sys/vfs/devfs/devfs_core.c  |    9 ++++++++-
 sys/vfs/devfs/devfs_vnops.c |    1 +
 2 files changed, 9 insertions(+), 1 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/e23485a5fa4ee8679a681c1dead71f925f14965f


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