From: Daniel Wagner <dwagner@suse.de>
To: linux-nvme@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, Keith Busch <kbusch@kernel.org>,
Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@lst.de>,
Sagi Grimberg <sagi@grimberg.me>, Daniel Wagner <dwagner@suse.de>
Subject: [PATCH v3] nvme: remove superfluous bio_set_dev in nvme_requeue_work
Date: Mon, 7 Jun 2021 10:46:51 +0200 [thread overview]
Message-ID: <20210607084651.99122-1-dwagner@suse.de> (raw)
Commit ce86dad222e9 ("nvme-multipath: reset bdev to ns head when
failover") moved the reset code where the bio is added to the
requeue_list for the failover path. But it left the original
bio_set_dev in nvme_requeue_work.
There is a second path to nvme_requee_work. It is via
nvme_ns_head_submit_bio. Though we don't have to set bio->bi_bdev for
this path either, as it points to the correct bdev already.
Let's remove the bio_set_dev. It's updating the bio->bi_bdev with the
same pointer and thus it's unnecessary.
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
v3: - dropped bio_set_dev from nvme_ns_head_submit_bio
- renamed patch
v2: https://lore.kernel.org/linux-nvme/20210603072537.GA4718@lst.de/
drivers/nvme/host/multipath.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 127a17b4c13d..a501917d4c6e 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -435,11 +435,6 @@ static void nvme_requeue_work(struct work_struct *work)
next = bio->bi_next;
bio->bi_next = NULL;
- /*
- * Reset disk to the mpath node and resubmit to select a new
- * path.
- */
- bio_set_dev(bio, head->disk->part0);
submit_bio_noacct(bio);
}
}
--
2.29.2
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next reply other threads:[~2021-06-07 9:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-07 8:46 Daniel Wagner [this message]
2021-06-08 16:43 ` [PATCH v3] nvme: remove superfluous bio_set_dev in nvme_requeue_work Christoph Hellwig
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