From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhihui Zhang Subject: Re: idea about internal fragmentation in Btrfs Date: Sun, 20 Jun 2010 04:20:54 +0800 Message-ID: References: <87k4pvo16d.fsf@basil.nowhere.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org To: Andi Kleen Return-path: In-Reply-To: <87k4pvo16d.fsf@basil.nowhere.org> List-ID: 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 wrote= : > Zhihui Zhang 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. =A0Can we ma= ke >> the root as the leaf? =A0In 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@linux.intel.com -- Speaking for myself only. > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html