fix IN_DELETE_SELF on overwriting rename() on ramfs et.al.

On ramfs and other simple_rename() users IN_DELETE_SELF is not generated
for victim of overwriting rename() if it's is a directory.  Works on
most of the local filesystems and really trivial to fix...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/libfs.c b/fs/libfs.c
index 8f2271a5df53..c18e9a1235b6 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -328,8 +328,10 @@ int simple_rename(struct inode *old_dir, struct dentry *old_dentry,
 
         if (new_dentry->d_inode) {
                 simple_unlink(new_dir, new_dentry);
-                if (they_are_dirs)
+                if (they_are_dirs) {
+                        drop_nlink(new_dentry->d_inode);
                         drop_nlink(old_dir);
+                }
         } else if (they_are_dirs) {
                 drop_nlink(old_dir);
                 inc_nlink(new_dir);