--- zzzz-none-000/linux-4.4.271/include/linux/dcache.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/linux/dcache.h	2023-04-19 10:22:30.000000000 +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