[PATCH] inotify: fix file deletion by rename detection

When a file is moved over an existing file that you are watching,
inotify won't send you a DELETE_SELF event and it won't unref the inode
until the inotify instance is closed by the application.

Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 7 insertions, 2 deletions

diff --git a/fs/namei.c b/fs/namei.c
index 02a824cd3c5c..4a27eb798118 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2218,7 +2218,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                 error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
         if (!error) {
                 const char *new_name = old_dentry->d_name.name;
-                fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir);
+                fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir, new_dentry->d_inode);
         }
         fsnotify_oldname_free(old_name);
 
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index d07a92c94776..e96a4306ab3b 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -21,7 +21,7 @@
  */
 static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
                                  const char *old_name, const char *new_name,
-                                 int isdir)
+                                 int isdir, struct inode *target)
 {
         u32 cookie = inotify_get_cookie();
 
@@ -36,6 +36,11 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
                 isdir = IN_ISDIR;
         inotify_inode_queue_event(old_dir, IN_MOVED_FROM|isdir,cookie,old_name);
         inotify_inode_queue_event(new_dir, IN_MOVED_TO|isdir, cookie, new_name);
+
+        if (target) {
+                inotify_inode_queue_event(target, IN_DELETE_SELF, 0, NULL);
+                inotify_inode_is_dead(target);
+        }
 }
 
 /*