Re: [PATCH] Fix bug in ext3 htree rename: doesn't delete old name, leaves ino with bad nlink

[Andrew Morton <akpm@digeo.com>]

chrisl@vmware.com wrote:
> 
> This should fix the ext3 htree rename problem. Please try it again.
> 

The 2.5 version....


--- 25/fs/ext3/namei.c~ext3-rename-fix	Wed Nov  6 00:36:43 2002
+++ 25-akpm/fs/ext3/namei.c	Wed Nov  6 00:41:20 2002
@@ -2160,7 +2160,7 @@ static int ext3_rename (struct inode * o
 
 	lock_kernel();
 	handle = ext3_journal_start(old_dir, 2 * EXT3_DATA_TRANS_BLOCKS +
-			 		EXT3_INDEX_EXTRA_TRANS_BLOCKS + 2);
+			 		EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3);
 	if (IS_ERR(handle)) {
 		unlock_kernel();
 		return PTR_ERR(handle);
@@ -2237,7 +2237,30 @@ static int ext3_rename (struct inode * o
 	/*
 	 * ok, that's it
 	 */
-	ext3_delete_entry(handle, old_dir, old_de, old_bh);
+	retval = ext3_delete_entry(handle, old_dir, old_de, old_bh);
+	if (retval == -ENOENT) {
+		/*
+		 * old_de can be moved during ext3_add_entry.
+		 */
+		struct buffer_head *old_bh2;
+		struct ext3_dir_entry_2 *old_de2;
+		old_bh2 = ext3_find_entry(old_dentry, &old_de2);
+		if (old_bh2) {
+			retval = ext3_delete_entry(handle, old_dir,
+						old_de2, old_bh2);
+			brelse(old_bh2);
+		} else {
+			ext3_warning(old_dir->i_sb, "ext3_rename",
+				"Deleting old file not found (%lu), %d",
+				old_dir->i_ino, old_dir->i_nlink);
+		}
+	}
+
+	if (retval) {
+		ext3_warning(old_dir->i_sb, "ext3_rename",
+				"Deleting old file (%lu), %d, error=%d",
+				old_dir->i_ino, old_dir->i_nlink, retval);
+	}
 
 	if (new_inode) {
 		new_inode->i_nlink--;

_