To: linux-kernel@vger.kernel.org From: torvalds@transmeta.com (Linus Torvalds) Subject: Re: [rfc] Near-constant time directory index for Ext2 Date: 21 Feb 2001 20:02:18 -0800 In article <3A948ACB.7B55BEAE@innominate.de>, Daniel Phillips <phillips@innominate.de> wrote: > >I mentioned this earlier but it's worth repeating: the desire to use a >small block size is purely an artifact of the fact that ext2 has no >handling for tail block fragmentation. That's a temporary situation - >once we've dealt with it your 2,000,000 file directory will be happier >with 4K filesystem blocks. I'd rather see a whole new filesystem than have ext2 do tail-block fragmentation. Once you do tail fragments, you might as well do the whole filesystem over and have it do fancier stuff than just handling sub-blocking. Another way of saying this: if you go to the complexity of no longer being a purely block-based filesystem, please go the whole way. Make the thing be extent-based, and get away from the notion that you have to allocate blocks one at a time. Make the blocksize something nice and big, not just 4kB or 8kB or something. And don't call it ext2. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/