[PATCH V3 6/7] blk-mq: move blk_mq_put_driver_tag*() into blk-mq.h

[Ming Lei]

We need this helper to put the driver tag for flush rq, since we will
not share tag in the flush request sequence in the following patch
in case that I/O scheduler is applied.

Signed-off-by: Ming Lei <ming....@redhat.com>
---
 block/blk-mq.c | 32 --------------------------------
 block/blk-mq.h | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 32 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5e2866b83305..bf62065a15ec 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -993,38 +993,6 @@ bool blk_mq_get_driver_tag(struct request *rq, struct 
blk_mq_hw_ctx **hctx,
        return rq->tag != -1;
 }
 
-static void __blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,
-                                   struct request *rq)
-{
-       blk_mq_put_tag(hctx, hctx->tags, rq->mq_ctx, rq->tag);
-       rq->tag = -1;
-
-       if (rq->rq_flags & RQF_MQ_INFLIGHT) {
-               rq->rq_flags &= ~RQF_MQ_INFLIGHT;
-               atomic_dec(&hctx->nr_active);
-       }
-}
-
-static void blk_mq_put_driver_tag_hctx(struct blk_mq_hw_ctx *hctx,
-                                      struct request *rq)
-{
-       if (rq->tag == -1 || rq->internal_tag == -1)
-               return;
-
-       __blk_mq_put_driver_tag(hctx, rq);
-}
-
-static void blk_mq_put_driver_tag(struct request *rq)
-{
-       struct blk_mq_hw_ctx *hctx;
-
-       if (rq->tag == -1 || rq->internal_tag == -1)
-               return;
-
-       hctx = blk_mq_map_queue(rq->q, rq->mq_ctx->cpu);
-       __blk_mq_put_driver_tag(hctx, rq);
-}
-
 /*
  * If we fail getting a driver tag because all the driver tags are already
  * assigned and on the dispatch list, BUT the first entry does not have a
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 713be5ae83ba..f55d39b0c6ed 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -2,6 +2,7 @@
 #define INT_BLK_MQ_H
 
 #include "blk-stat.h"
+#include "blk-mq-tag.h"
 
 struct blk_mq_tag_set;
 
@@ -157,4 +158,36 @@ static inline blk_status_t blk_mq_get_dispatch_budget(
        return BLK_STS_OK;
 }
 
+static inline void __blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,
+                                          struct request *rq)
+{
+       blk_mq_put_tag(hctx, hctx->tags, rq->mq_ctx, rq->tag);
+       rq->tag = -1;
+
+       if (rq->rq_flags & RQF_MQ_INFLIGHT) {
+               rq->rq_flags &= ~RQF_MQ_INFLIGHT;
+               atomic_dec(&hctx->nr_active);
+       }
+}
+
+static inline void blk_mq_put_driver_tag_hctx(struct blk_mq_hw_ctx *hctx,
+                                      struct request *rq)
+{
+       if (rq->tag == -1 || rq->internal_tag == -1)
+               return;
+
+       __blk_mq_put_driver_tag(hctx, rq);
+}
+
+static inline void blk_mq_put_driver_tag(struct request *rq)
+{
+       struct blk_mq_hw_ctx *hctx;
+
+       if (rq->tag == -1 || rq->internal_tag == -1)
+               return;
+
+       hctx = blk_mq_map_queue(rq->q, rq->mq_ctx->cpu);
+       __blk_mq_put_driver_tag(hctx, rq);
+}
+
 #endif
-- 
2.9.5