Split the RQF_DONTPREP and RQF_SOFTBARRIER in separate branches to make
the code more readable.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
---
block/blk-mq.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index c3de03217f4f1a..d17871c237f7df 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1427,20 +1427,21 @@ static void blk_mq_requeue_work(struct work_struct *work)
spin_unlock_irq(&q->requeue_lock);
list_for_each_entry_safe(rq, next, &rq_list, queuelist) {
- if (!(rq->rq_flags & (RQF_SOFTBARRIER | RQF_DONTPREP)))
- continue;
-
- rq->rq_flags &= ~RQF_SOFTBARRIER;
- list_del_init(&rq->queuelist);
/*
- * If RQF_DONTPREP, rq has contained some driver specific
- * data, so insert it to hctx dispatch list to avoid any
- * merge.
+ * If RQF_DONTPREP ist set, the request has been started by the
+ * driver already and might have driver-specific data allocated
+ * already. Insert it into the hctx dispatch list to avoid
+ * block layer merges for the request.
*/
- if (rq->rq_flags & RQF_DONTPREP)
+ if (rq->rq_flags & RQF_DONTPREP) {
+ rq->rq_flags &= ~RQF_SOFTBARRIER;
+ list_del_init(&rq->queuelist);
blk_mq_request_bypass_insert(rq, false, false);
- else
+ } else if (rq->rq_flags & RQF_SOFTBARRIER) {
+ rq->rq_flags &= ~RQF_SOFTBARRIER;
+ list_del_init(&rq->queuelist);
blk_mq_insert_request(rq, true, false, false);
+ }
}
while (!list_empty(&rq_list)) {
--
2.39.2
