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blk-mq: switch ->queue_rq return value to blk_status_t

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Use the same values for use for request completion errors as the return
value from ->queue_rq.  BLK_STS_RESOURCE is special cased to cause
a requeue, and all the others are completed as-is.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-06-03 09:38:05 +02:00
committed by Jens Axboe
parent 2a842acab1
commit fc17b6534e
18 changed files with 133 additions and 144 deletions
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drivers/md/dm-rq.c
+4 -4
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@@ -727,7 +727,7 @@ static int dm_mq_init_request(struct blk_mq_tag_set *set, struct request *rq,
return __dm_rq_init_rq(set->driver_data, rq);
}
static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
static blk_status_t dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *bd)
{
struct request *rq = bd->rq;
@@ -744,7 +744,7 @@ static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
}
if (ti->type->busy && ti->type->busy(ti))
return BLK_MQ_RQ_QUEUE_BUSY;
return BLK_STS_RESOURCE;
dm_start_request(md, rq);
@@ -762,10 +762,10 @@ static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
rq_end_stats(md, rq);
rq_completed(md, rq_data_dir(rq), false);
blk_mq_delay_run_hw_queue(hctx, 100/*ms*/);
return BLK_MQ_RQ_QUEUE_BUSY;
return BLK_STS_RESOURCE;
}
return BLK_MQ_RQ_QUEUE_OK;
return BLK_STS_OK;
}
static const struct blk_mq_ops dm_mq_ops = {