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-rw-r--r--block/blk-wbt.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index c9358f1981fb..84507d3e9a98 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -540,6 +540,9 @@ static enum wbt_flags bio_to_wbt_flags(struct rq_wb *rwb, struct bio *bio)
{
enum wbt_flags flags = 0;
+ if (!rwb_enabled(rwb))
+ return 0;
+
if (bio_op(bio) == REQ_OP_READ) {
flags = WBT_READ;
} else if (wbt_should_throttle(rwb, bio)) {