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-rw-r--r--block/blk-flush.c4
-rw-r--r--block/blk-mq.c12
-rw-r--r--include/linux/blk-mq.h2
3 files changed, 13 insertions, 5 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index ef608b3..ff87c66 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -223,8 +223,10 @@ static void flush_end_io(struct request *flush_rq, int error)
struct request *rq, *n;
unsigned long flags = 0;
- if (q->mq_ops)
+ if (q->mq_ops) {
spin_lock_irqsave(&q->mq_flush_lock, flags);
+ q->flush_rq->cmd_flags = 0;
+ }
running = &q->flush_queue[q->flush_running_idx];
BUG_ON(q->flush_pending_idx == q->flush_running_idx);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 6160128..21f952a 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -541,9 +541,15 @@ void blk_mq_kick_requeue_list(struct request_queue *q)
}
EXPORT_SYMBOL(blk_mq_kick_requeue_list);
-struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag)
+struct request *blk_mq_tag_to_rq(struct blk_mq_hw_ctx *hctx, unsigned int tag)
{
- return tags->rqs[tag];
+ struct request_queue *q = hctx->queue;
+
+ if ((q->flush_rq->cmd_flags & REQ_FLUSH_SEQ) &&
+ q->flush_rq->tag == tag)
+ return q->flush_rq;
+
+ return hctx->tags->rqs[tag];
}
EXPORT_SYMBOL(blk_mq_tag_to_rq);
@@ -572,7 +578,7 @@ static void blk_mq_timeout_check(void *__data, unsigned long *free_tags)
if (tag >= hctx->tags->nr_tags)
break;
- rq = blk_mq_tag_to_rq(hctx->tags, tag++);
+ rq = blk_mq_tag_to_rq(hctx, tag++);
if (rq->q != hctx->queue)
continue;
if (!test_bit(REQ_ATOM_STARTED, &rq->atomic_flags))
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 95de239..ad3adb7 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -154,7 +154,7 @@ void blk_mq_free_request(struct request *rq);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *);
struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
gfp_t gfp, bool reserved);
-struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag);
+struct request *blk_mq_tag_to_rq(struct blk_mq_hw_ctx *hctx, unsigned int tag);
struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index);
struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int);