extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
			  const char *name, struct cifs_sb_info *cifs_sb)
extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
			  const char *name, struct cifs_sb_info *cifs_sb,
			  struct dentry *dentry)