From: Jinke Han <hanjinke.666@xxxxxxxxxxxxx>
[ Upstream commit 0f7c8f0f7934c389b0f9fa1f151e753d8de6348f ]
In the current code, io statistics are missing for cgroup when bio
was throttled by blk-throttle. Fix it by moving the unreaching code
to submit_bio_noacct_nocheck.
Fixes: 3f98c753717c ("block: don't check bio in blk_throtl_dispatch_work_fn")
Signed-off-by: Jinke Han <hanjinke.666@xxxxxxxxxxxxx>
Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/r/20230216032250.74230-1-hanjinke.666@xxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
block/blk-core.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 5487912befe89..553afcdd638a6 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -672,6 +672,18 @@ static void __submit_bio_noacct_mq(struct bio *bio)
void submit_bio_noacct_nocheck(struct bio *bio)
{
+ blk_cgroup_bio_start(bio);
+ blkcg_bio_issue_init(bio);
+
+ if (!bio_flagged(bio, BIO_TRACE_COMPLETION)) {
+ trace_block_bio_queue(bio);
+ /*
+ * Now that enqueuing has been traced, we need to trace
+ * completion as well.
+ */
+ bio_set_flag(bio, BIO_TRACE_COMPLETION);
+ }
+
/*
* We only want one ->submit_bio to be active at a time, else stack
* usage with stacked devices could be a problem. Use current->bio_list
@@ -776,17 +788,6 @@ void submit_bio_noacct(struct bio *bio)
if (blk_throtl_bio(bio))
return;
-
- blk_cgroup_bio_start(bio);
- blkcg_bio_issue_init(bio);
-
- if (!bio_flagged(bio, BIO_TRACE_COMPLETION)) {
- trace_block_bio_queue(bio);
- /* Now that enqueuing has been traced, we need to trace
- * completion as well.
- */
- bio_set_flag(bio, BIO_TRACE_COMPLETION);
- }
submit_bio_noacct_nocheck(bio);
return;
--
2.39.2
