ANDROID: sdcardfs: notify lower file of opens

fsnotify_open is not called within dentry_open,
so we need to call it ourselves.

Change-Id: Ia7f323b3d615e6ca5574e114e8a5d7973fb4c119
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 70706497

fs/sdcardfs/file.c

@@ -18,6 +18,7 @@
  * General Public License.
  */
 
+#include <linux/fsnotify.h>
 #include "sdcardfs.h"
 #ifdef CONFIG_SDCARD_FS_FADV_NOACTIVE
 #include <linux/backing-dev.h>
@@ -243,6 +244,7 @@ static int sdcardfs_open(struct inode *inode, struct file *file)
 			fput(lower_file); /* fput calls dput for lower_dentry */
 		}
 	} else {
+		fsnotify_open(lower_file);
 		sdcardfs_set_lower_file(file, lower_file);
 	}