cifs: Do not use tcon->cfid directly, use the cfid we get from open_cached_dir

They are the same right now but tcon-> will later point to a different
type of struct containing a list of cfids.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: Ronnie Sahlberg

fs/cifs/smb2inode.c

@@ -519,9 +519,9 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 		rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
 	/* If it is a root and its handle is cached then use it */
 	if (!rc) {
-		if (tcon->cfid.file_all_info_is_valid) {
+		if (cfid->file_all_info_is_valid) {
 			move_smb2_info_to_cifs(data,
-					       &tcon->cfid.file_all_info);
+					       &cfid->file_all_info);
 		} else {
 			rc = SMB2_query_info(xid, tcon,
 					     cfid->fid->persistent_fid,

fs/cifs/smb2pdu.c

@@ -1979,7 +1979,7 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon)
 	}
 	spin_unlock(&ses->chan_lock);
 
-	close_cached_dir_lease(&tcon->cfid);
+	invalidate_all_cached_dirs(tcon);
 
 	rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, ses->server,
 				 (void **) &req,