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blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAG

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To prepare for wider use of this constant give it a more applicable name.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-05-29 15:53:11 +02:00 committed by Jens Axboe
parent 7ea4d8a4d6
commit 419c3d5e80
3 changed files with 5 additions and 5 deletions
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4
block/blk-mq-tag.c
View File

@ -111,7 +111,7 @@ unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
if (data->flags & BLK_MQ_REQ_RESERVED) { if (data->flags & BLK_MQ_REQ_RESERVED) {
if (unlikely(!tags->nr_reserved_tags)) { if (unlikely(!tags->nr_reserved_tags)) {
WARN_ON_ONCE(1); WARN_ON_ONCE(1);
return BLK_MQ_TAG_FAIL; return BLK_MQ_NO_TAG;
} }
bt = &tags->breserved_tags; bt = &tags->breserved_tags;
tag_offset = 0; tag_offset = 0;
@ -125,7 +125,7 @@ unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
goto found_tag; goto found_tag;
if (data->flags & BLK_MQ_REQ_NOWAIT) if (data->flags & BLK_MQ_REQ_NOWAIT)
return BLK_MQ_TAG_FAIL; return BLK_MQ_NO_TAG;
ws = bt_wait_ptr(bt, data->hctx); ws = bt_wait_ptr(bt, data->hctx);
do { do {

4
block/blk-mq-tag.h
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@ -44,9 +44,9 @@ static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt,
} }
enum { enum {
BLK_MQ_TAG_FAIL = -1U, BLK_MQ_NO_TAG = -1U,
BLK_MQ_TAG_MIN = 1, BLK_MQ_TAG_MIN = 1,
BLK_MQ_TAG_MAX = BLK_MQ_TAG_FAIL - 1, BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1,
}; };
extern bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *); extern bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *);

2
block/blk-mq.c
View File

@ -386,7 +386,7 @@ static struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data)
} }
tag = blk_mq_get_tag(data); tag = blk_mq_get_tag(data);
if (tag == BLK_MQ_TAG_FAIL) { if (tag == BLK_MQ_NO_TAG) {
if (clear_ctx_on_error) if (clear_ctx_on_error)
data->ctx = NULL; data->ctx = NULL;
return NULL; return NULL;