From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Mike Snitzer <snitzer@redhat.com>
Cc: linux-block@vger.kernel.org,
Jeffle Xu <jefflexu@linux.alibaba.com>,
dm-devel@redhat.com, Hannes Reinecke <hare@suse.de>,
Christoph Hellwig <hch@lst.de>, Ming Lei <ming.lei@redhat.com>
Subject: [RFC PATCH 0/4] block/dm: support bio polling
Date: Wed, 16 Jun 2021 21:05:29 +0800 [thread overview]
Message-ID: <20210616130533.754248-1-ming.lei@redhat.com> (raw)
Hello Guys,
Based on Christoph's bio based polling model[1], implement DM bio polling
with one very simple approach.
Patch 1 adds helper of blk_queue_poll().
Patch 2 reuses .bi_next to bio driver for storing driver data.
Patch 3 adds .bio_poll() callback to block_device_operations, so bio
driver can implement its own logic for io polling.
Patch 4 implements bio polling for device mapper.
Any comments are welcome.
[1] switch block layer polling to a bio based model v4
https://lore.kernel.org/linux-block/20210615160619.GA32435@lst.de/T/#t
Ming Lei (4):
block: add helper of blk_queue_poll
block: add field of .bi_bio_drv_data to bio
block: add ->poll_bio to block_device_operations
dm: support bio polling
block/blk-core.c | 21 +++++++++-----
block/blk-sysfs.c | 4 +--
block/genhd.c | 3 ++
drivers/md/dm-table.c | 24 ++++++++++++++++
drivers/md/dm.c | 59 ++++++++++++++++++++++++++++++++++++---
drivers/nvme/host/core.c | 2 +-
include/linux/blk_types.h | 11 +++++++-
include/linux/blkdev.h | 3 ++
8 files changed, 112 insertions(+), 15 deletions(-)
--
2.31.1
next reply other threads:[~2021-06-16 13:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 13:05 Ming Lei [this message]
2021-06-16 13:05 ` [RFC PATCH 1/4] block: add helper of blk_queue_poll Ming Lei
2021-06-16 13:05 ` [RFC PATCH 2/4] block: add field of .bi_bio_drv_data to bio Ming Lei
2021-06-16 13:05 ` [RFC PATCH 3/4] block: add ->poll_bio to block_device_operations Ming Lei
2021-06-16 13:05 ` [RFC PATCH 4/4] dm: support bio polling Ming Lei
2021-06-16 16:05 ` Mike Snitzer
2021-06-17 2:14 ` Ming Lei
2021-06-18 14:33 ` Christoph Hellwig
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=20210616130533.754248-1-ming.lei@redhat.com \
--to=ming.lei@redhat.com \
--cc=axboe@kernel.dk \
--cc=dm-devel@redhat.com \
--cc=hare@suse.de \
--cc=hch@lst.de \
--cc=jefflexu@linux.alibaba.com \
--cc=linux-block@vger.kernel.org \
--cc=snitzer@redhat.com \
/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).