--- zzzz-none-000/linux-4.1.52/fs/ubifs/ubifs.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/fs/ubifs/ubifs.h	2022-03-02 11:37:13.000000000 +0000
@@ -180,6 +180,9 @@
 	WB_MUTEX_1 = 0,
 	WB_MUTEX_2 = 1,
 	WB_MUTEX_3 = 2,
+#if defined(CONFIG_BCM_KF_UBIFS_OVERLAY_BACKPORTS)
+	WB_MUTEX_4 = 3,
+#endif
 };
 
 /*
@@ -1544,10 +1547,22 @@
 			 const union ubifs_key *key, const void *buf, int len);
 int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode);
 int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode);
+#if defined(CONFIG_BCM_KF_UBIFS_OVERLAY_BACKPORTS)
+int ubifs_jnl_xrename(struct ubifs_info *c, const struct inode *fst_dir,
+		      const struct dentry *fst_dentry,
+		      const struct inode *snd_dir,
+		      const struct dentry *snd_dentry, int sync);
+int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
+		     const struct dentry *old_dentry,
+		     const struct inode *new_dir,
+			 const struct dentry *new_dentry,
+		     const struct inode *whiteout, int sync);
+#else
 int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
 		     const struct dentry *old_dentry,
 		     const struct inode *new_dir,
 		     const struct dentry *new_dentry, int sync);
+#endif
 int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
 		       loff_t old_size, loff_t new_size);
 int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,