blk-mq: remove blk_mq_alloc_request_pinned

We now only have one caller left and can open code it there in a cleaner
way.

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

1 files changed, 16 insertions, 32 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 43f0c8ffa92a..ae14749b530c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -264,46 +264,30 @@ __blk_mq_alloc_request(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
         return NULL;
 }
 
-static struct request *blk_mq_alloc_request_pinned(struct request_queue *q,
-                                                   int rw, gfp_t gfp,
-                                                   bool reserved)
-{
-        bool gfp_mask = gfp & ~__GFP_WAIT;
-        struct request *rq;
-
-        do {
-                struct blk_mq_ctx *ctx = blk_mq_get_ctx(q);
-                struct blk_mq_hw_ctx *hctx = q->mq_ops->map_queue(q, ctx->cpu);
-
-                rq = __blk_mq_alloc_request(q, hctx, ctx, rw, gfp_mask,
-                                                reserved);
-                if (rq)
-                        break;
-
-                if (!(gfp & __GFP_WAIT)) {
-                        blk_mq_put_ctx(ctx);
-                        break;
-                }
-
-                __blk_mq_run_hw_queue(hctx);
-                blk_mq_put_ctx(ctx);
-                gfp_mask = gfp;
-        } while (1);
-
-        return rq;
-}
-
 struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp,
                 bool reserved)
 {
+        struct blk_mq_ctx *ctx;
+        struct blk_mq_hw_ctx *hctx;
         struct request *rq;
 
         if (blk_mq_queue_enter(q))
                 return NULL;
 
-        rq = blk_mq_alloc_request_pinned(q, rw, gfp, reserved);
-        if (rq)
-                blk_mq_put_ctx(rq->mq_ctx);
+        ctx = blk_mq_get_ctx(q);
+        hctx = q->mq_ops->map_queue(q, ctx->cpu);
+
+        rq = __blk_mq_alloc_request(q, hctx, ctx, rw, gfp & ~__GFP_WAIT,
+                                    reserved);
+        if (!rq && (gfp & __GFP_WAIT)) {
+                __blk_mq_run_hw_queue(hctx);
+                blk_mq_put_ctx(ctx);
+
+                ctx = blk_mq_get_ctx(q);
+                hctx = q->mq_ops->map_queue(q, ctx->cpu);
+                rq =  __blk_mq_alloc_request(q, hctx, ctx, rw, gfp, reserved);
+        }
+        blk_mq_put_ctx(ctx);
         return rq;
 }
 EXPORT_SYMBOL(blk_mq_alloc_request);