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From: Pavel Begunkov <asml.silence@gmail.com>
To: io-uring@vger.kernel.org, linux-block@vger.kernel.org,
	linux-nvme@lists.infradead.org
Cc: linux-fsdevel@vger.kernel.org, Keith Busch <kbusch@kernel.org>,
	David Wei <dw@davidwei.uk>,
	Vishal Verma <vishal1.verma@intel.com>,
	asml.silence@gmail.com
Subject: [RFC 12/12] io_uring/rw: enable dma registered buffers
Date: Fri, 27 Jun 2025 16:10:39 +0100	[thread overview]
Message-ID: <dcb53f0011913630e246b7e57ef6872f3716e762.1751035820.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1751035820.git.asml.silence@gmail.com>

Enable dmabuf registered buffer from the read-write path.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/rw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/io_uring/rw.c b/io_uring/rw.c
index cfcd7d26d8dc..78ac6a86521c 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -372,8 +372,8 @@ static int io_init_rw_fixed(struct io_kiocb *req, unsigned int issue_flags,
 	if (io->bytes_done)
 		return 0;
 
-	ret = io_import_reg_buf(req, &io->iter, rw->addr, rw->len, ddir,
-				issue_flags);
+	ret = __io_import_reg_buf(req, &io->iter, rw->addr, rw->len, ddir,
+				  issue_flags, IO_REGBUF_IMPORT_ALLOW_DMA);
 	iov_iter_save_state(&io->iter, &io->iter_state);
 	return ret;
 }
-- 
2.49.0


  parent reply	other threads:[~2025-06-27 15:09 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-27 15:10 [RFC 00/12] io_uring dmabuf read/write support Pavel Begunkov
2025-06-27 15:10 ` [RFC 01/12] file: add callback returning dev for dma operations Pavel Begunkov
2025-06-27 15:10 ` [RFC 02/12] iov_iter: introduce iter type for pre-registered dma Pavel Begunkov
2025-06-27 15:10 ` [RFC 03/12] block: move around bio flagging helpers Pavel Begunkov
2025-06-27 15:10 ` [RFC 04/12] block: introduce dmavec bio type Pavel Begunkov
2025-06-27 15:10 ` [RFC 05/12] block: implement ->get_dma_device callback Pavel Begunkov
2025-06-27 15:10 ` [RFC 06/12] nvme-pci: add support for user passed dma vectors Pavel Begunkov
2025-06-27 15:10 ` [RFC 07/12] io_uring/rsrc: extended reg buffer registration Pavel Begunkov
2025-06-27 15:10 ` [RFC 08/12] io_uring: add basic dmabuf helpers Pavel Begunkov
2025-06-27 15:10 ` [RFC 09/12] io_uring/rsrc: add imu flags Pavel Begunkov
2025-06-27 15:10 ` [RFC 10/12] io_uring/rsrc: add dmabuf-backed buffer registeration Pavel Begunkov
2025-06-27 15:10 ` [RFC 11/12] io_uring/rsrc: implement dmabuf regbuf import Pavel Begunkov
2025-06-27 15:10 ` Pavel Begunkov [this message]
2025-07-03 14:23 ` [RFC 00/12] io_uring dmabuf read/write support Christoph Hellwig
2025-07-03 14:37   ` Christian König
2025-07-07 11:15   ` Pavel Begunkov
2025-07-07 14:48     ` Christoph Hellwig
2025-07-07 15:41       ` Pavel Begunkov
2025-07-08  9:45         ` Christoph Hellwig

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