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
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