From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F38652D5936; Wed, 21 Jan 2026 06:46:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768978005; cv=none; b=Q+e7B4J8hlnA/vKV+gKstYa5qnwOl2LzKGBedUnW22oW6BII+tYhDAtE90D0aaE5y2cvZg+AxVoR7fjTgBEADUz4HqNFdXcbxosBKwArGefUduHKDOMr7I2rF/5OGzRcLA+N9TkhQii9CffRlvXshrH3wJE5/Np2MAfflZAzvcE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768978005; c=relaxed/simple; bh=aA2jmLoOvqU3qLGnJU7DrGdRorUGFczckmNf6FTN5xk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=OgM04X/cl5ymM4MYsdBAGEXKUOIhopg3gZZgZ0/eHi+QaFzm/oJtUXzeMO2z5jV4rBR4x9bzAAWXISFp6bdH41duOnum0Q9NCztrwXl1XQ+ZzmKAPYcjY6ETHqSa/qwKU//Uf63MCKGFqpunVb3O7Ji7MOEXbXy5MHSl44twDDc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=yhGeDWXV; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="yhGeDWXV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=CnhDpIsWKW5XYhbfn+aRQ5ZRT1AjiuyxQAPrkdLFV9E=; b=yhGeDWXVKZxOnRmXco4laRWQ2E p7vFyrH4BKmzdGxZq5ziT8sz0G+XZiJs/Z2tqaiENi84Dn7jZaOiXpW0FCjqDBefOVMBYA9NwiUBt /QR5xy9cNjlLZYu/ud7VBY8jcd8L1iVq5/WZ6g+DU1HXwDX6Dcr6TncVUzAi9FwgOiCFTerln6jTY RUPfdP0N+qNQxSv3z0JO/RNzZMWnHFEtS4+ZnCTQFAFgV6pJR/E6QCQHF0GxHRFG/j06YoR4qDZ3r HhndSEVyNWKhbijSY4wAVrXY61CseFRgwXBydAEpmf8CTAc4xK47QXdSilfC+1Xy8N4PooMHkGMUa CZ5cSlYQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1viRzH-00000004xtJ-20g2; Wed, 21 Jan 2026 06:46:43 +0000 Date: Tue, 20 Jan 2026 22:46:43 -0800 From: Christoph Hellwig To: "Darrick J. Wong" Cc: Zorro Lang , fstests , xfs Subject: Re: [PATCH] xfs/614: fix test for parent pointers Message-ID: References: <20260121012700.GF15541@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260121012700.GF15541@frogsfrogsfrogs> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Jan 20, 2026 at 05:27:00PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong > > Almost a decade ago, the initial rmap/reflink patches were merged with > hugely overestimated log space reservations. Although we adjusted the > actual runtime reservations a few years ago, we left the minimum log > size calculations in place to avoid compatibility problems between newer > mkfs and older kernels. > > With the introduction of parent pointers, we can finally use the more > accurate reservations for minlog computations and mkfs can format > smaller logs as a result. This causes the output of this test to > change, though it wasn't needed until parent pointers were enabled by > default. Yeah, this has been failing for me for a while and I've been wanting to look into it, I'm glad I don't have to :) Reviewed-by: Christoph Hellwig