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-rw-r--r--block/bfq-iosched.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 9bc10198ddff..05041f84b8da 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -5481,8 +5481,14 @@ static void bfq_update_inject_limit(struct bfq_data *bfqd,
* total service time, and there seem to be the right
* conditions to do it, or we can lower the last base value
* computed.
+ *
+ * NOTE: (bfqd->rq_in_driver == 1) means that there is no I/O
+ * request in flight, because this function is in the code
+ * path that handles the completion of a request of bfqq, and,
+ * in particular, this function is executed before
+ * bfqd->rq_in_driver is decremented in such a code path.
*/
- if ((bfqq->last_serv_time_ns == 0 && bfqd->rq_in_driver == 0) ||
+ if ((bfqq->last_serv_time_ns == 0 && bfqd->rq_in_driver == 1) ||
tot_time_ns < bfqq->last_serv_time_ns) {
bfqq->last_serv_time_ns = tot_time_ns;
/*