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 020511547CC for ; Fri, 13 Dec 2024 06:11:02 +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=1734070264; cv=none; b=SZJ9BwdIofvuDetU7pqimBgyEjRkA6nECE9CtFzaCjVAfnWnLSylmdCrWFCIcT92J0oa8zv3DAuqiKw0XHik1CRweisbgBwBEd7SJHIGcGXVqmNWfkG4j2aHpFUfnenaIwelU0gmz4GPFq4++cDnj7BYmrtNw19E6NRRbuq4+5Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734070264; c=relaxed/simple; bh=hkovd+V6GZRiSSu5qDoRgDRDVpHE1OkGJYSrpeOL38E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=m7rrTwNO2joyBwaxW0rNx6468ogAtjf9MeLVUfcTDYZFOm/EhKvS18rLqtWZ31B74zaYQ4PAoOTjOw+6M5frSK75y0zc2mdqH9SZGmpviH0sfJSkQ0UXN6IAaZqkhPNlCncGoNmd50r45oNRitKLm/JUZeHoKSRI0iUa2fG84UM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (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=Y8SvzvrC; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (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="Y8SvzvrC" 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=YcBgwOBhIOLCgabgrnZQh/td9yi3JKqnMJ9FMOM0tYg=; b=Y8SvzvrCP4yJ9fkVBv4P11KTJm 56WiPgqtUv2Gt3iMD1oAspcI651llcJidI86Sn93XOEbK3KX9toHnzU9eqaUdonDivcPN0FQrR8UN T3XoO0lT8iihEXgETZHtKhjhplz44IkP30EW99YD7JAkkC0BrjnSd3ck4aVHkyov/Q2TYeJaa7CFs +xsWoUb4eiHdXhFnN9bMYlkuL67IaWV0j20IV5Rmwz0YhNAV2WgDOlmyMoMtMc5YnKAoteTTMB1SK O2bMv3+aDKmm8NBhgpz0pZSg28U1hAx/ZoP36Ja5QFDgghDyxU/UW7irED0yibTF9rxGkLQGaWiG/ Uyj2G1Xg==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tLytC-00000002qLZ-2kMW; Fri, 13 Dec 2024 06:11:02 +0000 Date: Thu, 12 Dec 2024 22:11:02 -0800 From: Christoph Hellwig To: "Darrick J. Wong" Cc: hch@lst.de, linux-xfs@vger.kernel.org Subject: Re: [PATCH 2/2] xfs: allow inode-based btrees to reserve space in the data device Message-ID: References: <173405122694.1181241.15502767706128799927.stgit@frogsfrogsfrogs> <173405122737.1181241.12229622781538486656.stgit@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: <173405122737.1181241.12229622781538486656.stgit@frogsfrogsfrogs> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Thu, Dec 12, 2024 at 05:00:35PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong > > Create a new space reservation scheme so that btree metadata for the > realtime volume can reserve space in the data device to avoid space > underruns. Can you explain this scheme a bit more here?