fs:notify add support for inotify

support API: open close read write unlink mkdir rename fchstat rmdir symlink

Signed-off-by: guohao15 <guohao15@xiaomi.com>

fs/mount/fs_umount2.c

@@ -32,6 +32,7 @@
 #include <nuttx/fs/fs.h>
 
 #include "inode/inode.h"
+#include "notify/notify.h"
 
 /****************************************************************************
  * Public Functions
@@ -184,6 +185,9 @@ int nx_umount2(FAR const char *target, unsigned int flags)
     }
 
   RELEASE_SEARCH(&desc);
+#ifdef CONFIG_FS_NOTIFY
+  notify_unmount(target);
+#endif
   return OK;
 
   /* A lot of goto's!  But they make the error handling much simpler */