cifs: temporarily rename cifs_sb->tcon to ptcon to catch stragglers

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifs_fs_sb.h

@@ -39,7 +39,7 @@
 #define CIFS_MOUNT_MF_SYMLINKS	0x10000 /* Minshall+French Symlinks enabled */
 
 struct cifs_sb_info {
-	struct cifsTconInfo *tcon;	/* primary mount */
+	struct cifsTconInfo *ptcon;	/* primary mount */
 	struct list_head nested_tcon_q;
 	struct nls_table *local_nls;
 	unsigned int rsize;

fs/cifs/cifsglob.h

@@ -416,7 +416,7 @@ CIFS_SB(struct super_block *sb)
 static inline struct cifsTconInfo *
 cifs_sb_tcon(struct cifs_sb_info *cifs_sb)
 {
-	return cifs_sb->tcon;
+	return cifs_sb->ptcon;
 }
 
 static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)

fs/cifs/connect.c

@@ -2727,7 +2727,7 @@ try_mount_again:
 		goto remote_path_check;
 	}
 
-	cifs_sb->tcon = tcon;
+	cifs_sb->ptcon = tcon;
 
 	/* do not care if following two calls succeed - informational */
 	if (!tcon->ipc) {
@@ -3029,7 +3029,7 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
 	if (cifs_sb_tcon(cifs_sb))
 		cifs_put_tcon(cifs_sb_tcon(cifs_sb));
 
-	cifs_sb->tcon = NULL;
+	cifs_sb->ptcon = NULL;
 	tmp = cifs_sb->prepath;
 	cifs_sb->prepathlen = 0;
 	cifs_sb->prepath = NULL;