From: Christoph Hellwig <hch@lst.de>
To: Pavel Begunkov <asml.silence@gmail.com>
Cc: "Jens Axboe" <axboe@kernel.dk>, "Keith Busch" <kbusch@kernel.org>,
"Christoph Hellwig" <hch@lst.de>,
"Sagi Grimberg" <sagi@grimberg.me>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
io-uring@vger.kernel.org, linux-media@vger.kernel.org,
dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Christian Brauner" <brauner@kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Nitesh Shetty" <nj.shetty@samsung.com>,
"Kanchan Joshi" <joshi.k@samsung.com>,
"Anuj Gupta" <anuj20.g@samsung.com>,
"Tushar Gohad" <tushar.gohad@intel.com>,
"William Power" <william.power@intel.com>,
"Phil Cayton" <phil.cayton@intel.com>,
"Jason Gunthorpe" <jgg@nvidia.com>,
"Damien Le Moal" <dlemoal@kernel.org>,
"Alasdair Kergon" <agk@redhat.com>,
"Mike Snitzer" <snitzer@kernel.org>,
"Mikulas Patocka" <mpatocka@redhat.com>,
"Benjamin Marzinski" <bmarzins@redhat.com>,
"Vishal Verma" <vishal.l.verma@intel.com>,
"David Sterba" <dsterba@suse.com>,
"Ilya Dryomov" <idryomov@gmail.com>,
dm-devel@lists.linux.dev, nvdimm@lists.linux.dev,
linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org
Subject: Re: [PATCH v4 02/14] iov_iter: add iterator type for dmabuf maps
Date: Wed, 29 Jul 2026 08:59:53 +0200 [thread overview]
Message-ID: <20260729065953.GB9534@lst.de> (raw)
In-Reply-To: <132442812a40277a5904cb2a8ca1e02f4f6e82a2.1785274111.git.asml.silence@gmail.com>
On Tue, Jul 28, 2026 at 10:29:14PM +0100, Pavel Begunkov wrote:
> Introduce a new iterator type for dmabuf maps. The map in an opaque
> object with internals and format specific to the subsystem / driver, and
> only it can use that subsystem / driver for issuing IO. The task of the
> middle layers is to pass the map / iterator further down, maybe doing
> basic splitting and length checking. The iterator can only be used by
> operations of the file the associated map was created for.
>
> Suggested-by: Keith Busch <kbusch@kernel.org>
> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
I'm also pretty sure I reviewed this and vairous other patches
before..
next prev parent reply other threads:[~2026-07-29 6:59 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-28 21:29 [PATCH v4 00/14] Add dmabuf read/write via io_uring Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 01/14] dma-buf: introduce initial file I/O infrastructure Pavel Begunkov
2026-07-29 6:59 ` Christoph Hellwig
2026-07-29 10:37 ` Pavel Begunkov
2026-07-29 11:28 ` Christoph Hellwig
2026-07-29 13:11 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 02/14] iov_iter: add iterator type for dmabuf maps Pavel Begunkov
2026-07-29 6:59 ` Christoph Hellwig [this message]
2026-07-29 10:40 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 03/14] block: rename bi_bvec_done Pavel Begunkov
2026-07-29 7:00 ` Christoph Hellwig
2026-07-28 21:29 ` [PATCH v4 04/14] block: always adjust bi_offset on bio_advance_iter Pavel Begunkov
2026-07-29 7:00 ` Christoph Hellwig
2026-07-28 21:29 ` [PATCH v4 05/14] block: move bvec init into __bio_clone Pavel Begunkov
2026-07-29 7:00 ` Christoph Hellwig
2026-07-28 21:29 ` [PATCH v4 06/14] block: introduce dma map backed bio type Pavel Begunkov
2026-07-29 7:07 ` Christoph Hellwig
2026-07-29 11:03 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 07/14] block: forward init_dma_buf_io_ctx to drivers Pavel Begunkov
2026-07-29 7:07 ` Christoph Hellwig
2026-07-28 21:29 ` [PATCH v4 08/14] nvme-pci: implement dma_token backed requests Pavel Begunkov
2026-07-29 7:10 ` Christoph Hellwig
2026-07-29 10:49 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 09/14] nvme-pci: add SGL support for the dmabuf path Pavel Begunkov
2026-07-29 7:21 ` Christoph Hellwig
2026-07-29 10:17 ` Anuj Gupta/Anuj Gupta
2026-07-29 11:31 ` Christoph Hellwig
2026-07-29 11:45 ` Pavel Begunkov
2026-07-29 11:55 ` Christoph Hellwig
2026-07-29 13:08 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 10/14] io_uring/rsrc: introduce buf registration structure Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 11/14] io_uring/rsrc: extend buffer update Pavel Begunkov
2026-07-29 13:31 ` Anuj Gupta/Anuj Gupta
2026-07-29 13:39 ` Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 12/14] io_uring/rsrc: add uncloneable regbuf flag Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 13/14] io_uring/rsrc: add regbuf import flags Pavel Begunkov
2026-07-28 21:29 ` [PATCH v4 14/14] io_uring/rsrc: add dmabuf backed registered buffers Pavel Begunkov
2026-07-29 13:30 ` Anuj Gupta/Anuj Gupta
2026-07-29 13:43 ` Pavel Begunkov
2026-07-29 6:54 ` [PATCH v4 00/14] Add dmabuf read/write via io_uring Christoph Hellwig
2026-07-29 11:28 ` Pavel Begunkov
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