From: Alex Tomas Subject: Re: booked-page-flag.patch Date: Thu, 15 Feb 2007 20:30:43 +0300 Message-ID: References: <20070215004504.023a90f0.akpm@linux-foundation.org> <45D495EA.3060200@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Andrew Morton , "Theodore Ts'o" , Alex Tomas , "linux-ext4@vger.kernel.org" To: Eric Sandeen Return-path: Received: from [80.71.245.246] ([80.71.245.246]:63838 "EHLO nsold.rialcom.ru" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1161321AbXBOVLV (ORCPT ); Thu, 15 Feb 2007 16:11:21 -0500 In-Reply-To: <45D495EA.3060200@redhat.com> (Eric Sandeen's message of "Thu\, 15 Feb 2007 09\:18\:34 -0800") Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org >>>>> Eric Sandeen (ES) writes: ES> Andrew Morton wrote: >> Sorry, we're seriously, seriously, seriously short on flags in the page >> struct and this patch is going to need one heck of a good case for it to be >> acceptable. ES> This was for the delayed allocation patchset, right; and by managing ES> this at the page level that means we can't do this for block size < ES> page size, I think... I still think that having PG_booked and special code to handle case when blocksize==pagesize is worthwhile -- we save 56 bytes on 32bit and 104 bytes on 64bit for every written page. thanks, Alex