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| author | Keith Busch <kbusch@kernel.org> | 2023-03-31 21:00:56 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-05 01:11:47 +0300 |
| commit | 38a8c4d1d45006841f0643f4cb29b5e50758837c (patch) | |
| tree | 05cfa4ff5174c7d5297aadbe11699f8266778deb /drivers/nvme | |
| parent | 24ab70d83784a807c9ddff939ea762ef19bd4ffd (diff) | |
| download | linux-38a8c4d1d45006841f0643f4cb29b5e50758837c.tar.xz | |
blk-mq: directly poll requests
Polling needs a bio with a valid bi_bdev, but neither of those are
guaranteed for polled driver requests. Make request based polling
directly use blk-mq's polling function instead.
When executing a request from a polled hctx, we know the request's
cookie, and that it's from a live blk-mq queue that supports polling, so
we can safely skip everything that bio_poll provides.
Cc: stable@kernel.org
Reported-by: Martin Belanger <Martin.Belanger@dell.com>
Reported-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Tested-by: Daniel Wagner <dwagner@suse.de>
Revieded-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20230331180056.1155862-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme')
0 files changed, 0 insertions, 0 deletions