Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug


       __d_drop - drop a dentry


       void __d_drop  (struct dentry * dentry);


       dentry dentry to drop


        d_drop  unhashes  the  entry from the parent dentry hashes, so that it
       won’t be found through a  VFS  lookup  any  more.  Note  that  this  is
       different  from  deleting  the  dentry  - d_delete will try to mark the
       dentry negative if possible, giving  a  successful  _negative_  lookup,
       while d_drop will just make the cache lookup fail.

        d_drop  is used mainly for stuff that wants to invalidate a dentry for
       some reason (NFS timeouts or autofs deletes).

       __d_drop requires dentry->d_lock.