From: sashiko-bot@kernel.org
To: "Pranjal Shrivastava" <praan@google.com>
Cc: linux-pci@vger.kernel.org, "Jeff Layton" <jlayton@kernel.org>,
"Anna Schumaker" <anna@kernel.org>,
"Chuck Lever" <cel@kernel.org>,
linux-rdma@vger.kernel.org
Subject: Re: [RFC PATCH v1 1/8] sunrpc: introduce XDRBUF_P2PDMA flag
Date: Tue, 06 Oct 2026 23:41:17 +0000 [thread overview]
Message-ID: <sashiko-outbox-162516@kernel.org> (raw)
In-Reply-To: <20261006233248.705086-2-praan@google.com>
> The NFS client will soon pass PCI peer-to-peer DMA (P2PDMA) pages
> to the transport as READ or WRITE payload. Only a transport that
> can DMA directly to and from that memory may move it.
>
> Introduce XDRBUF_P2PDMA and a helper, xprt_rqst_has_p2pdma(), to
> mark and detect requests whose pages are P2PDMA memory. The TCP
> (including TLS), UDP and AF_LOCAL transports return -EREMOTEIO for
> such a request before touching the socket. iov_iter_extract_pages()
> returns the same error today for P2PDMA pages the caller did not allow.
> Thus, users see no new error code.
>
> Signed-off-by: Pranjal Shrivastava <praan@google.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261006233248.705086-1-praan@google.com?part=1
next prev parent reply other threads:[~2026-10-06 23:41 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-06 23:32 [RFC PATCH v1 0/8] nfs: PCI P2PDMA for O_DIRECT over RDMA Pranjal Shrivastava
2026-10-06 23:32 ` [RFC PATCH v1 1/8] sunrpc: introduce XDRBUF_P2PDMA flag Pranjal Shrivastava
2026-10-06 23:41 ` sashiko-bot [this message]
2026-10-06 23:32 ` [RFC PATCH v1 2/8] sunrpc: fail only the RPC a transport refuses Pranjal Shrivastava
2026-10-06 23:41 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 3/8] xprtrdma: move P2PDMA payloads only via chunks Pranjal Shrivastava
2026-10-06 23:47 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 4/8] xprtrdma: return -EREMOTEIO on P2PDMA map failure Pranjal Shrivastava
2026-10-06 23:42 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 5/8] nfs: tag READ/WRITE RPCs carrying P2PDMA pages Pranjal Shrivastava
2026-10-06 23:45 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 6/8] nfs: refuse P2PDMA pages with krb5i and krb5p Pranjal Shrivastava
2026-10-06 23:46 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 7/8] nfs: allow LOCALIO for P2PDMA pages only as aligned direct I/O Pranjal Shrivastava
2026-10-06 23:51 ` sashiko-bot
2026-10-06 23:32 ` [RFC PATCH v1 8/8] nfs: allow P2PDMA pages for O_DIRECT on RDMA mounts Pranjal Shrivastava
2026-10-06 23:42 ` sashiko-bot
2026-10-07 21:20 ` [RFC PATCH v1 0/8] nfs: PCI P2PDMA for O_DIRECT over RDMA Chuck Lever
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=sashiko-outbox-162516@kernel.org \
--to=sashiko-bot@kernel.org \
--cc=anna@kernel.org \
--cc=cel@kernel.org \
--cc=jlayton@kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=praan@google.com \
--cc=sashiko-reviews@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox