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Message-ID: <AANLkTikSD70wX4eBi6GZyOSqL478dmT8_eEmYzz9zzk9@mail.gmail.com> Date: Sun, 20 Jun 2010 04:20:54 +0800 From: Zhihui Zhang <zzhsuny@...il.com> To: Andi Kleen <andi@...stfloor.org> Cc: linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org Subject: Re: idea about internal fragmentation in Btrfs Makes perfect sense. No wonder some btrfs folks used to work on reiserfs/4. I hope a solution can be or has been found. On Sat, Jun 19, 2010 at 4:51 PM, Andi Kleen <andi@...stfloor.org> wrote: > Zhihui Zhang <zzhsuny@...il.com> writes: > >> I wish Btrfs well, so I would venture an idea for this specific case >> mentioned by Edward Shishkin today. >> >> Everyone knows that B-tree has internal and leaf nodes. Can we make >> the root as the leaf? In other words, if you >> create a 2K file, the B-tree will have only one node, which is both >> the root and the leaf. Of course, you need some flag to >> say this is a "degenerated" form of B-tree. Please cc me if you want >> my response. > > You need to copy linux-btrfs to reach btrfs developers. > Ccs added > > The problem with your idea is that on btrfs there's only > a single tree for the whole fs (or whole snapshot rather) > So it would only work for a single file because there's > only a single root. > > -Andi > -- > ak@...ux.intel.com -- Speaking for myself only. > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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