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Date: Sun, 6 Jun 2010 15:54:57 +0400 From: Evgeniy Ivanov <lolkaantimat@...il.com> To: linux-ext4@...r.kernel.org Subject: Re: ext2 and directory indexing On Sun, Jun 6, 2010 at 3:29 PM, Evgeniy Ivanov <lolkaantimat@...il.com> 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 are 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 of > 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 of > 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). -- Evgeniy Ivanov -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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