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Subject[PATCH 1/2] blk-mq: Delete blk_mq_has_free_tags() and blk_mq_can_queue()
Date
These functions are not referenced, so delete them.

Signed-off-by: John Garry <john.garry@huawei.com>
---
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 5c9adcaa27ac..323c9cb28066 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 dc03e059fdff..11cfd6470b1a 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -424,7 +424,6 @@ 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);

--
2.17.1
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