nvme: fix handling single range discard request

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[ Upstream commit 37f0dc2ec7 ]

When investigating one customer report on warning in nvme_setup_discard,
we observed the controller(nvme/tcp) actually exposes
queue_max_discard_segments(req->q) == 1.

Obviously the current code can't handle this situation, since contiguity
merge like normal RW request is taken.

Fix the issue by building range from request sector/nr_sectors directly.

Fixes: b35ba01ea6 ("nvme: support ranged discard requests")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Ming Lei 2023-03-04 07:13:45 +08:00 • committed by Greg Kroah-Hartman

parent 06aca9bee9

commit e40a30a962

1 changed files with 19 additions and 9 deletions

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drivers/nvme/host/core.c

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