From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 AF9F3559313; Tue, 22 Sep 2026 13:16:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.95.11.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790082984; cv=none; b=RkRel2pQ7pcqzzIzPS5Ql2INBZS6an/7RjYo13ejtQhfNznXhdD1TF6q+rxdjfY5zb/PyeUv4poI6kpzufhbUI6fdMUOy8ckvZqgI+IueVv20pfLJV06a5Kc7lxBUs7ifu5si/TxuWni3Ll0dEaHQGVIYi3Yfa/IStL/yX0z2jg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790082984; c=relaxed/simple; bh=Y8SIGh6YdZZ1CNW2JjI2lgNP0I2lOTxj/HFJcJxssAM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nA5t0XLtI/BfQMu4lTKsMcWtjoIdoHf8t0ONQqVF0J9ANWZqHCDL1OAnY0kKz+06jI9GxDlUreTIl862OH0a1MvbiVmF4QZmDs08Q1pAiaASUWicQSteJ1qMLzhdbZo3jbrz7qdMusiKHASpsJTuIU0CdRwGxOaZ41Emsr8gejQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.client-ip=213.95.11.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id A774668C4E; Tue, 22 Sep 2026 15:16:11 +0200 (CEST) Date: Tue, 22 Sep 2026 15:16:10 +0200 From: Christoph Hellwig To: Pavel Begunkov Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, Christoph Hellwig , Sumit Semwal , Christian =?iso-8859-1?Q?K=F6nig?= , Keith Busch , Sagi Grimberg , Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Jens Axboe , Nitesh Shetty , Kanchan Joshi , Anuj Gupta , Tushar Gohad , William Power , Phil Cayton , Matthew Brost , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , dm-devel@lists.linux.dev Subject: Re: [PATCH v6 04/13] block: introduce dma map backed bio type Message-ID: <20260922131610.GA30468@lst.de> References: Precedence: bulk X-Mailing-List: linux-kernel@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: User-Agent: Mutt/1.5.17 (2007-11-01) On Mon, Sep 21, 2026 at 02:38:48PM +0100, Pavel Begunkov wrote: > Premapped buffers don't require a generic bio_vec since these have > already been dma mapped. Repurpose the bi_io_vec space to strore dmabuf s/strore/store/ Can you please expland on the splitting considerations a bit? Preferably both in a comment for the details, and in the commit log for how we arrived at them and why they are fine for now? Otherwise looks good.