From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: netdev@vger.kernel.org
Subject: [PATCHSET v2 0/5] io_uring: ensure all needed read/write data is stable
Date: Mon, 2 Dec 2019 19:54:39 -0700 [thread overview]
Message-ID: <20191203025444.29344-1-axboe@kernel.dk> (raw)
Currently we don't copy the associated iovecs when we punt to async
context, and this can prove problematic if the caller only ensures
the iovec is valid for the submission. This is a perfectly valid
assumption, and I think io_uring should make sure that this is safe
to do.
First patch is a prep patch, the following patches add support for
the various opcodes that need it.
Also see: https://github.com/axboe/liburing/issues/27
fs/io_uring.c | 466 ++++++++++++++++++++++++++--------
include/linux/socket.h | 20 +-
include/uapi/linux/io_uring.h | 1 +
net/socket.c | 76 ++----
4 files changed, 406 insertions(+), 157 deletions(-)
Changes since v1:
- Get rid of REQ_F_PREPPED, just use req->io
- Add sendmsg/recvmsg and connect
- Add IORING_FEAT_SUBMIT_STABLE to userspace can tell kernels with this
"feature" apart from older ones
--
Jens Axboe
next reply other threads:[~2019-12-03 2:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 2:54 Jens Axboe [this message]
2019-12-03 2:54 ` [PATCH 1/5] io_uring: add general async offload context Jens Axboe
2019-12-03 2:54 ` [PATCH 2/5] io_uring: ensure async punted read/write requests copy iovec Jens Axboe
2019-12-03 2:54 ` [PATCH 3/5] io_uring: ensure async punted sendmsg/recvmsg requests copy data Jens Axboe
2019-12-03 2:54 ` [PATCH 4/5] io_uring: ensure async punted connect " Jens Axboe
2019-12-03 2:54 ` [PATCH 5/5] io_uring: mark us with IORING_FEAT_SUBMIT_STABLE Jens Axboe
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=20191203025444.29344-1-axboe@kernel.dk \
--to=axboe@kernel.dk \
--cc=io-uring@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).