From 4da7c5c3ec34d839bba6e035c3d05c447a2f9d4f Mon Sep 17 00:00:00 2001 From: Shida Zhang Date: Tue, 27 Jan 2026 16:21:12 +0800 Subject: [PATCH] bcache: fix I/O accounting leak in detached_dev_do_request 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: cafe56359144 ("bcache: A block layer cache") Signed-off-by: Shida Zhang Acked-by: Coly Li Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/md/bcache/request.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index c2f38907a2a3..3fa3b13a410f 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -1107,6 +1107,7 @@ static void detached_dev_do_request(struct bcache_device *d, if (bio_op(orig_bio) == REQ_OP_DISCARD && !bdev_max_discard_sectors(dc->bdev)) { + bio_end_io_acct(orig_bio, start_time); bio_endio(orig_bio); return; } -- 2.47.3