1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index d2c0ee30e618..44848aa830dc 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -9,6 +9,7 @@
 
 #ifdef __KERNEL__
 
+#include <linux/idr.h> /* inotify uses this */
 #include <linux/fs.h> /* struct inode */
 #include <linux/list.h>
 #include <linux/path.h> /* struct path */
@@ -59,6 +60,7 @@
 
 /* listeners that hard code group numbers near the top */
 #define DNOTIFY_GROUP_NUM       UINT_MAX
+#define INOTIFY_GROUP_NUM       (DNOTIFY_GROUP_NUM-1)
 
 struct fsnotify_group;
 struct fsnotify_event;
@@ -141,6 +143,15 @@ struct fsnotify_group {
         /* groups can define private fields here or use the void *private */
         union {
                 void *private;
+#ifdef CONFIG_INOTIFY_USER
+                struct inotify_group_private_data {
+                        spinlock_t      idr_lock;
+                        struct idr      idr;
+                        u32             last_wd;
+                        struct fasync_struct    *fa;    /* async notification */
+                        struct user_struct      *user;
+                } inotify_data;
+#endif
         };
 };