block: Remove blk_mq_attempt_merge() function

}

EXPORT_SYMBOL_GPL(blk_mq_sched_try_merge);

/*

 * Reverse check our software queue for entries that we could potentially

 * merge with. Currently includes a hand-wavy stop count of 8, to not spend

 * too much time checking for merges.

 */

static bool blk_mq_attempt_merge(struct request_queue *q,

				 struct blk_mq_hw_ctx *hctx,

				 struct blk_mq_ctx *ctx, struct bio *bio,

				 unsigned int nr_segs)

{

	enum hctx_type type = hctx->type;

	lockdep_assert_held(&ctx->lock);

	if (blk_bio_list_merge(q, &ctx->rq_lists[type], bio, nr_segs)) {

		ctx->rq_merged++;

		return true;

	}

	return false;

}

bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,

		unsigned int nr_segs)

{

		return e->type->ops.bio_merge(hctx, bio, nr_segs);

	type = hctx->type;

	if ((hctx->flags & BLK_MQ_F_SHOULD_MERGE) &&

			!list_empty_careful(&ctx->rq_lists[type])) {

	if (!(hctx->flags & BLK_MQ_F_SHOULD_MERGE) ||

	    list_empty_careful(&ctx->rq_lists[type]))

		return false;

	/* default per sw-queue merge */

	spin_lock(&ctx->lock);

		ret = blk_mq_attempt_merge(q, hctx, ctx, bio, nr_segs);

		spin_unlock(&ctx->lock);

	/*

	 * Reverse check our software queue for entries that we could

	 * potentially merge with. Currently includes a hand-wavy stop

	 * count of 8, to not spend too much time checking for merges.

	 */

	if (blk_bio_list_merge(q, &ctx->rq_lists[type], bio, nr_segs)) {

		ctx->rq_merged++;

		ret = true;

	}

	spin_unlock(&ctx->lock);

	return ret;

}