[PATCH] ext3: htree readdir fix

I've observed that ext3_htree_fill_tree() doesn't ignore empty records
(de->inode == 0).  test case is very simple: turn htree on, create several
hundreds of files, remove them and look at strace ls:

[root@victim tests]# ls -a /test/1
.  ..

[root@victim tests]# strace ls /test/1/
....
getdents64(3, /* 18 entries */, 4096)   = 432
getdents64(3, /* 0 entries */, 4096)    = 0
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/ext3/namei.c

@@ -557,6 +557,8 @@ static int htree_dirblock_to_tree(struct file *dir_file,
 		    ((hinfo->hash == start_hash) &&
 		     (hinfo->minor_hash < start_minor_hash)))
 			continue;
+		if (de->inode == 0)
+			continue;
 		if ((err = ext3_htree_store_dirent(dir_file,
 				   hinfo->hash, hinfo->minor_hash, de)) != 0) {
 			brelse(bh);