[dm-devel] [PATCH V3 0/3] block/dm: support bio polling
Mike Snitzer
snitzer at redhat.com
Mon Feb 28 16:27:44 UTC 2022
On Wed, Jun 23 2021 at 3:40P -0400,
Ming Lei <ming.lei at redhat.com> wrote:
> 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 adds .bio_poll() callback to block_device_operations, so bio
> driver can implement its own logic for io polling.
>
> Patch 3 implements bio polling for device mapper.
>
>
> V3:
> - patch style change as suggested by Christoph(2/3)
> - fix kernel panic issue caused by nested dm polling, which is found
> & figured out by Jeffle Xu (3/3)
> - re-organize setup polling code (3/3)
> - remove RFC
>
> V2:
> - drop patch to add new fields into bio
> - support io polling for dm native bio splitting
> - add comment
>
> Ming Lei (3):
> block: add helper of blk_queue_poll
> block: add ->poll_bio to block_device_operations
> dm: support bio polling
>
> block/blk-core.c | 18 +++---
> block/blk-sysfs.c | 4 +-
> block/genhd.c | 2 +
> drivers/md/dm-table.c | 24 +++++++
> drivers/md/dm.c | 131 ++++++++++++++++++++++++++++++++++++++-
> drivers/nvme/host/core.c | 2 +-
> include/linux/blkdev.h | 2 +
> 7 files changed, 170 insertions(+), 13 deletions(-)
>
> --
> 2.31.1
>
Hey Ming,
I'd like us to follow-through with adding bio-based polling support.
Kind of strange none of us that were sent this V3 ever responded,
sorry about that!
Do you have interest in rebasing this patchset (against linux-dm.git's
"dm-5.18" branch since there has been quite some churn)? Or are you
OK with me doing the rebase?
thanks,
Mike
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