1 files changed, 29 insertions, 8 deletions

diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 0c94457c625e..ab81a0776ece 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -279,6 +279,18 @@ static int fsnotify_handle_event(struct fsnotify_group *group, __u32 mask,
 	    WARN_ON_ONCE(fsnotify_iter_vfsmount_mark(iter_info)))
 		return 0;
 
+	/*
+	 * For FS_RENAME, 'dir' is old dir and 'data' is new dentry.
+	 * The only ->handle_inode_event() backend that supports FS_RENAME is
+	 * dnotify, where it means file was renamed within same parent.
+	 */
+	if (mask & FS_RENAME) {
+		struct dentry *moved = fsnotify_data_dentry(data, data_type);
+
+		if (dir != moved->d_parent->d_inode)
+			return 0;
+	}
+
 	if (parent_mark) {
 		/*
 		 * parent_mark indicates that the parent inode is watching
@@ -469,7 +481,9 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
 	struct super_block *sb = fsnotify_data_sb(data, data_type);
 	struct fsnotify_iter_info iter_info = {};
 	struct mount *mnt = NULL;
-	struct inode *parent = NULL;
+	struct inode *inode2 = NULL;
+	struct dentry *moved;
+	int inode2_type;
 	int ret = 0;
 	__u32 test_mask, marks_mask;
 
@@ -479,12 +493,19 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
 	if (!inode) {
 		/* Dirent event - report on TYPE_INODE to dir */
 		inode = dir;
+		/* For FS_RENAME, inode is old_dir and inode2 is new_dir */
+		if (mask & FS_RENAME) {
+			moved = fsnotify_data_dentry(data, data_type);
+			inode2 = moved->d_parent->d_inode;
+			inode2_type = FSNOTIFY_ITER_TYPE_INODE2;
+		}
 	} else if (mask & FS_EVENT_ON_CHILD) {
 		/*
 		 * Event on child - report on TYPE_PARENT to dir if it is
 		 * watching children and on TYPE_INODE to child.
 		 */
-		parent = dir;
+		inode2 = dir;
+		inode2_type = FSNOTIFY_ITER_TYPE_PARENT;
 	}
 
 	/*
@@ -497,7 +518,7 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
 	if (!sb->s_fsnotify_marks &&
 	    (!mnt || !mnt->mnt_fsnotify_marks) &&
 	    (!inode || !inode->i_fsnotify_marks) &&
-	    (!parent || !parent->i_fsnotify_marks))
+	    (!inode2 || !inode2->i_fsnotify_marks))
 		return 0;
 
 	marks_mask = sb->s_fsnotify_mask;
@@ -505,8 +526,8 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
 		marks_mask |= mnt->mnt_fsnotify_mask;
 	if (inode)
 		marks_mask |= inode->i_fsnotify_mask;
-	if (parent)
-		marks_mask |= parent->i_fsnotify_mask;
+	if (inode2)
+		marks_mask |= inode2->i_fsnotify_mask;
 
 
 	/*
@@ -529,9 +550,9 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
 		iter_info.marks[FSNOTIFY_ITER_TYPE_INODE] =
 			fsnotify_first_mark(&inode->i_fsnotify_marks);
 	}
-	if (parent) {
-		iter_info.marks[FSNOTIFY_ITER_TYPE_PARENT] =
-			fsnotify_first_mark(&parent->i_fsnotify_marks);
+	if (inode2) {
+		iter_info.marks[inode2_type] =
+			fsnotify_first_mark(&inode2->i_fsnotify_marks);
 	}
 
 	/*