[PATCH] eCryptfs: dput() lower d_parent on rename

On rename, for both the old and new lower dentry objects, eCryptfs is
missing a dput on the lower parent directory dentry.  This patch will
prevent the BUG() at fs/dcache.c:613 from being hit after renaming a file
inside eCryptfs and then doing a umount on the lower filesystem.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/ecryptfs/inode.c

@@ -630,6 +630,8 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		ecryptfs_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode);
 out_lock:
 	unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
+	dput(lower_new_dentry->d_parent);
+	dput(lower_old_dentry->d_parent);
 	dput(lower_new_dentry);
 	dput(lower_old_dentry);
 	return rc;