--- zzzz-none-000/linux-4.4.60/include/linux/dcache.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/include/linux/dcache.h	2021-02-04 17:41:59.000000000 +0000
@@ -205,6 +205,7 @@
 #define DCACHE_COOKIE			0x00002000 /* For use by dcookie subsystem */
 #define DCACHE_FSNOTIFY_PARENT_WATCHED	0x00004000
      /* Parent inode is watched by some fsnotify listener */
+#define DCACHE_FSNOTIFY_PARENT_WATCHED_RECURSIVLY	0x10000000
 
 #define DCACHE_DENTRY_KILLED		0x00008000
 
@@ -615,5 +616,11 @@
 	return d_backing_inode(d_real(dentry));
 }
 
+struct name_snapshot {
+	const char *name;
+	char inline_name[DNAME_INLINE_LEN];
+};
+void take_dentry_name_snapshot(struct name_snapshot *, struct dentry *);
+void release_dentry_name_snapshot(struct name_snapshot *);
 
 #endif	/* __LINUX_DCACHE_H */