From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: [RFC] new free space caching stuff Date: Fri, 22 May 2009 10:11:34 -0400 Message-ID: <20090522141133.GA8762@think> References: <20090521184351.GC11101@dhcp231-156.rdu.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-btrfs@vger.kernel.org To: Josef Bacik Return-path: In-Reply-To: <20090521184351.GC11101@dhcp231-156.rdu.redhat.com> List-ID: On Thu, May 21, 2009 at 02:43:52PM -0400, Josef Bacik wrote: > Hello, > > Okay I'm looking at redoing all of this stuff again, and I'd like to make this > the last time, so I'm going to outline what we currently have, what the problems > are with it, and what I want to do. I would appreciate any/all input so I can > try and get this right the first time. > Josef and I hashed this out someone on IRC. I think the bitmaps alone aren't going to scale all that well for huge filesystems, so he is looking into a hybrid bitmap/extent approach based on the size of the free space. -chris