bcache: fix I/O accounting leak in detached_dev_do_request

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[ Upstream commit 4da7c5c3ec ]

When a bcache device is detached, discard requests are completed
immediately. However, the I/O accounting started in
cached_dev_make_request() is not ended, leading to 100% disk
utilization reports in iostat. Add the missing bio_end_io_acct() call.

Fixes: cafe563591 ("bcache: A block layer cache")
Signed-off-by: Shida Zhang <zhangshida@kylinos.cn>
Acked-by: Coly Li <colyli@fnnas.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Shida Zhang 2026-01-27 16:21:12 +08:00 • committed by Greg Kroah-Hartman

parent 7b72d76a58

commit d36c4149ea

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drivers/md/bcache/request.c

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