From: John Garry <john.garry@huawei.com>
Date: Thu, 14 Nov 2019 01:27:21 +0800
Subject: [PATCH] blk-mq: Delete blk_mq_has_free_tags() and blk_mq_can_queue()
References: bsc#1175995,jsc#SLE-15608
Git-commit: cb711b91a3c685192f2cabd3735ca3de04694ed8
Patch-mainline: v5.5-rc1

These functions are not referenced, so delete them.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 block/blk-mq-tag.c     | 8 --------
 block/blk-mq-tag.h     | 1 -
 block/blk-mq.c         | 6 ------
 include/linux/blk-mq.h | 1 -
 4 files changed, 16 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 008388e82b5c..fbacde454718 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -15,14 +15,6 @@
 #include "blk-mq.h"
 #include "blk-mq-tag.h"
 
-bool blk_mq_has_free_tags(struct blk_mq_tags *tags)
-{
-	if (!tags)
-		return true;
-
-	return sbitmap_any_bit_clear(&tags->bitmap_tags.sb);
-}
-
 /*
  * If a previously inactive queue goes active, bump the active user count.
  * We need to do this before try to allocate driver tag, then even if fail
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index 61deab0b5a5a..15bc74acb57e 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -28,7 +28,6 @@ extern void blk_mq_free_tags(struct blk_mq_tags *tags);
 extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
 extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
 			   struct blk_mq_ctx *ctx, unsigned int tag);
-extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags);
 extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
 					struct blk_mq_tags **tags,
 					unsigned int depth, bool can_grow);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 974a6327774e..13cdaf9932a6 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -260,12 +260,6 @@ void blk_mq_wake_waiters(struct request_queue *q)
 			blk_mq_tag_wakeup_all(hctx->tags, true);
 }
 
-bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
-{
-	return blk_mq_has_free_tags(hctx->tags);
-}
-EXPORT_SYMBOL(blk_mq_can_queue);
-
 /*
  * Only need start/end time stamping if we have iostat or
  * blk stats enabled, or using an IO scheduler.
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 8d06da840061..b01ac06bc62c 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -402,7 +402,6 @@ void blk_mq_free_tag_set(struct blk_mq_tag_set *set);
 void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule);
 
 void blk_mq_free_request(struct request *rq);
-bool blk_mq_can_queue(struct blk_mq_hw_ctx *);
 
 bool blk_mq_queue_inflight(struct request_queue *q);
 
-- 
2.16.4