From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 21 Jul 2011 19:49:09 +0000 (-0400)
Subject: fix IN_DELETE_SELF on overwriting rename() on ramfs et.al.
X-Git-Tag: accepted/tizen/common/20141203.182822~6737^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=841590ce16c19a3ce38028adfc8b1955482ee00c;p=platform%2Fkernel%2Flinux-arm64.git

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>
---

diff --git a/fs/libfs.c b/fs/libfs.c
index 8f2271a..c18e9a1 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);