Linux-Block Archive on lore.kernel.org
 help / color / Atom feed
From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org
Cc: jmoyer@redhat.com
Subject: [PATCHSET v2] io_uring: support fileset add/remove/modify
Date: Fri,  4 Oct 2019 10:22:20 -0600
Message-ID: <20191004162222.10390-1-axboe@kernel.dk> (raw)

Currently we only support registrering a fixed file set. If changes need
to be made to that set, the application must unregister the existing set
first, then register a new one.

This patchset adds support for sparse file sets (patch 1), which means
the application can register a fileset with room for expansion. This is
done through having unregistered slots use fd == -1.

On top of that, we can add IORING_REGISTER_FILES_UPDATE. This allows
modifying the existing file set through:

- Replacing empty slots with valid file descriptors
- Replacing valid descriptors with an empty slot
- Modifying an existing slot, replacing a file descriptor with a new one

-- 
Jens Axboe



             reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04 16:22 Jens Axboe [this message]
2019-10-04 16:22 ` [PATCH 1/2] io_uring: allow sparse fixed file sets Jens Axboe
2019-10-04 16:22 ` [PATCH 2/2] io_uring: add support for IORING_REGISTER_FILES_UPDATE Jens Axboe
2019-10-04 18:17 ` [PATCHSET v2] io_uring: support fileset add/remove/modify Jeff Moyer
2019-10-04 18:52   ` Jens Axboe

Reply instructions:

You may reply publically 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=20191004162222.10390-1-axboe@kernel.dk \
    --to=axboe@kernel.dk \
    --cc=jmoyer@redhat.com \
    --cc=linux-block@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

Linux-Block Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-block/0 linux-block/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-block linux-block/ https://lore.kernel.org/linux-block \
		linux-block@vger.kernel.org
	public-inbox-index linux-block

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-block


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git