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-rw-r--r--include/linux/blk-cgroup.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 3bed5e02a873..f7b910768306 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -769,8 +769,14 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
if (!throtl) {
blkg = blkg ?: q->root_blkg;
- blkg_rwstat_add(&blkg->stat_bytes, bio->bi_opf,
- bio->bi_iter.bi_size);
+ /*
+ * If the bio is flagged with BIO_QUEUE_ENTERED it means this
+ * is a split bio and we would have already accounted for the
+ * size of the bio.
+ */
+ if (!bio_flagged(bio, BIO_QUEUE_ENTERED))
+ blkg_rwstat_add(&blkg->stat_bytes, bio->bi_opf,
+ bio->bi_iter.bi_size);
blkg_rwstat_add(&blkg->stat_ios, bio->bi_opf, 1);
}