From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41181) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aMS7A-0000UD-Cz for qemu-devel@nongnu.org; Thu, 21 Jan 2016 22:10:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aMS79-0001EJ-H0 for qemu-devel@nongnu.org; Thu, 21 Jan 2016 22:10:20 -0500 Date: Fri, 22 Jan 2016 11:10:09 +0800 From: Fam Zheng Message-ID: <20160122031009.GD24012@ad.usersys.redhat.com> References: <1449467995-18793-1-git-send-email-famz@redhat.com> <1449467995-18793-2-git-send-email-famz@redhat.com> <5683B793.6010000@virtuozzo.com> <20151230110714.GA13762@ad.usersys.redhat.com> <56A0B9E6.6090409@virtuozzo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56A0B9E6.6090409@virtuozzo.com> Subject: Re: [Qemu-devel] [PATCH RFC for-2.6 1/3] HBitmap: Introduce "meta" bitmap to track bit changes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Vladimir Sementsov-Ogievskiy Cc: Kevin Wolf , qemu-block@nongnu.org, qemu-devel@nongnu.org, Stefan Hajnoczi , pbonzini@redhat.com, jsnow@redhat.com On Thu, 01/21 13:58, Vladimir Sementsov-Ogievskiy wrote: > >>I thing now, that the same may be accomplished for BdrvDirtyBitmap, > >>all we need is return "changed" status from hb_set_between and then > >>from hbitmap_set. > >That is true, but it makes further optimizing to *really* only set the toggled > >meta bits much more difficult (i.e. when only a few bits between start and last > >are changed). > > Are you going add some optimization in following versions (v3 ?) or > as separate series, or other plan? I aim at a seperate series for that. Fam