From: Christoph Hellwig <hch@lst.de>
Date: Tue, 27 May 2014 18:59:46 +0000 (+0200)
Subject: blk-mq: merge blk_mq_alloc_reserved_request into blk_mq_alloc_request
X-Git-Tag: v3.16-rc1~30^2~49^2~16
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=4ce01dd1a07d9cf3eaf44fbf4ea9a61b11badccc;p=linux.git

blk-mq: merge blk_mq_alloc_reserved_request into blk_mq_alloc_request

Instead of having two almost identical copies of the same code just let
the callers pass in the reserved flag directly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-core.c b/block/blk-core.c
index 29d5fbafd94a..d87be5b4e554 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1173,7 +1173,7 @@ static struct request *blk_old_get_request(struct request_queue *q, int rw,
 struct request *blk_get_request(struct request_queue *q, int rw, gfp_t gfp_mask)
 {
 	if (q->mq_ops)
-		return blk_mq_alloc_request(q, rw, gfp_mask);
+		return blk_mq_alloc_request(q, rw, gfp_mask, false);
 	else
 		return blk_old_get_request(q, rw, gfp_mask);
 }
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 67066ecc79c0..63d581d72a70 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -294,35 +294,21 @@ static struct request *blk_mq_alloc_request_pinned(struct request_queue *q,
 	return rq;
 }
 
-struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp)
+struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp,
+		bool reserved)
 {
 	struct request *rq;
 
 	if (blk_mq_queue_enter(q))
 		return NULL;
 
-	rq = blk_mq_alloc_request_pinned(q, rw, gfp, false);
+	rq = blk_mq_alloc_request_pinned(q, rw, gfp, reserved);
 	if (rq)
 		blk_mq_put_ctx(rq->mq_ctx);
 	return rq;
 }
 EXPORT_SYMBOL(blk_mq_alloc_request);
 
-struct request *blk_mq_alloc_reserved_request(struct request_queue *q, int rw,
-					      gfp_t gfp)
-{
-	struct request *rq;
-
-	if (blk_mq_queue_enter(q))
-		return NULL;
-
-	rq = blk_mq_alloc_request_pinned(q, rw, gfp, true);
-	if (rq)
-		blk_mq_put_ctx(rq->mq_ctx);
-	return rq;
-}
-EXPORT_SYMBOL(blk_mq_alloc_reserved_request);
-
 static void __blk_mq_free_request(struct blk_mq_hw_ctx *hctx,
 				  struct blk_mq_ctx *ctx, struct request *rq)
 {
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b9a74a386dbc..2bd82f399128 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -160,8 +160,8 @@ void blk_mq_insert_request(struct request *, bool, bool, bool);
 void blk_mq_run_queues(struct request_queue *q, bool async);
 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);
-struct request *blk_mq_alloc_reserved_request(struct request_queue *q, int rw, gfp_t gfp);
+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 blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index);