From: Christoph Hellwig <hch@lst.de>
Date: Thu, 14 Jun 2018 14:26:47 +0200
Subject: [PATCH] blk-mq: remove blk_mq_tagset_iter
Git-commit: e6c3456aa897c9799de5423b28550efad14a51b0
Patch-mainline: v4.18-rc1
References: bsc#1104967,FATE#325924

Unused now that nvme stopped using it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 block/blk-mq-tag.c     | 29 -----------------------------
 include/linux/blk-mq.h |  2 --
 2 files changed, 31 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 70356a2a11ab..09b2ee6694fb 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -311,35 +311,6 @@ void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset,
 }
 EXPORT_SYMBOL(blk_mq_tagset_busy_iter);
 
-int blk_mq_tagset_iter(struct blk_mq_tag_set *set, void *data,
-			 int (fn)(void *, struct request *))
-{
-	int i, j, ret = 0;
-
-	if (WARN_ON_ONCE(!fn))
-		goto out;
-
-	for (i = 0; i < set->nr_hw_queues; i++) {
-		struct blk_mq_tags *tags = set->tags[i];
-
-		if (!tags)
-			continue;
-
-		for (j = 0; j < tags->nr_tags; j++) {
-			if (!tags->static_rqs[j])
-				continue;
-
-			ret = fn(data, tags->static_rqs[j]);
-			if (ret)
-				goto out;
-		}
-	}
-
-out:
-	return ret;
-}
-EXPORT_SYMBOL_GPL(blk_mq_tagset_iter);
-
 void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
 		void *priv)
 {
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index fb355173f3c7..e3147eb74222 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -281,8 +281,6 @@ void blk_freeze_queue_start(struct request_queue *q);
 void blk_mq_freeze_queue_wait(struct request_queue *q);
 int blk_mq_freeze_queue_wait_timeout(struct request_queue *q,
 				     unsigned long timeout);
-int blk_mq_tagset_iter(struct blk_mq_tag_set *set, void *data,
-		int (reinit_request)(void *, struct request *));
 
 int blk_mq_map_queues(struct blk_mq_tag_set *set);
 void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues);
-- 
2.16.4