[cifs:for-next 8/9] fs//cifs/smb2ops.c:1542:11: error: 'struct cifs_tcon' has no member named 'posix_extensions'

[kbuild test robot]

tree:   git://git.samba.org/sfrench/cifs-2.6.git for-next
head:   37a0fd808c8d8c2ad7d10275068d1c36dde14daf
commit: 1393fc1253e31e99cc4104f9b2019569c8487dd8 [8/9] smb3: add support for statfs for smb3.1.1 posix extensions
config: x86_64-randconfig-x011-201824 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        git checkout 1393fc1253e31e99cc4104f9b2019569c8487dd8
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   fs//cifs/smb2ops.c: In function 'smb311_queryfs':
>> fs//cifs/smb2ops.c:1542:11: error: 'struct cifs_tcon' has no member named 'posix_extensions'
     if (!tcon->posix_extensions)
              ^~
   At top level:
   fs//cifs/smb2ops.c:1533:1: warning: 'smb311_queryfs' defined but not used [-Wunused-function]
    smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
    ^~~~~~~~~~~~~~

vim +1542 fs//cifs/smb2ops.c

  1531	
  1532	static int
  1533	smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
  1534		     struct kstatfs *buf)
  1535	{
  1536		int rc;
  1537		__le16 srch_path = 0; /* Null - open root of share */
  1538		u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
  1539		struct cifs_open_parms oparms;
  1540		struct cifs_fid fid;
  1541	
> 1542		if (!tcon->posix_extensions)
  1543			return smb2_queryfs(xid, tcon, buf);
  1544	
  1545		oparms.tcon = tcon;
  1546		oparms.desired_access = FILE_READ_ATTRIBUTES;
  1547		oparms.disposition = FILE_OPEN;
  1548		oparms.create_options = 0;
  1549		oparms.fid = &fid;
  1550		oparms.reconnect = false;
  1551	
  1552		rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
  1553		if (rc)
  1554			return rc;
  1555	
  1556		rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
  1557					   fid.volatile_fid, buf);
  1558		buf->f_type = SMB2_MAGIC_NUMBER;
  1559		SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
  1560		return rc;
  1561	}
  1562	

---
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