From: Evgeniy Ivanov Subject: Re: ext2 and directory indexing Date: Sun, 6 Jun 2010 15:54:57 +0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE To: linux-ext4@vger.kernel.org Return-path: Received: from mail-vw0-f46.google.com ([209.85.212.46]:43326 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751218Ab0FFLy6 convert rfc822-to-8bit (ORCPT ); Sun, 6 Jun 2010 07:54:58 -0400 Received: by vws5 with SMTP id 5so1982407vws.19 for ; Sun, 06 Jun 2010 04:54:57 -0700 (PDT) In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: On Sun, Jun 6, 2010 at 3:29 PM, Evgeniy Ivanov = wrote: > Hello, > > I'm a bit confused by indexing and ext2. It looks like there is no > hash code in ext2, but ext2_fs.h has EXT2_INDEX_FL (most confusing), > EXT2_FEATURE_COMPAT_DIR_INDEX and some other HTree things, but > EXT2_INDEX_FL and EXT2_FEATURE_COMPAT_DIR_INDEX =A0are not used > anywhere. > I have ext2 partition created with mkfs.ext2 and when I check this > partition e2fsck converts some directories to the indexed format and > sets EXT2_INDEX_FL/EXT3_INDEX_FL. But since I failed grep any usage o= f > EXT2_INDEX_FL in fs/ext2 that code doesn't reset EXT2_INDEX_FL (some > time ago I was suggested to make my ext2 implementation to reset this > flag which looks correct for ext3, but not ext2). Is it expected > behavior of e2fsck? > Does ext2 have directory indexing support (should my implementation o= f > ext2 do that)? > It looks like partitions formatted with mkfs.ext2 have dir_index flag set. It's the reason why e2fsck sets EXT2_INDEX_FL. Is it ok, that mkfs.ext2 sets this flag (it manly depends on answer on previous question). --=20 Evgeniy Ivanov -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html