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block, nvme: Introduce blk_mq_req_flags_t

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Several block layer and NVMe core functions accept a combination
of BLK_MQ_REQ_* flags through the 'flags' argument but there is
no verification at compile time whether the right type of block
layer flags is passed. Make it possible for sparse to verify this.
This patch does not change any functionality.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: linux-nvme@lists.infradead.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche
2017-11-09 10:49:59 -08:00
committed by Jens Axboe
parent 3a0a529971
commit 9a95e4ef70
8 changed files with 30 additions and 21 deletions
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block/blk-mq.c
+2 -2
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@@ -383,7 +383,7 @@ static struct request *blk_mq_get_request(struct request_queue *q,
}
struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
unsigned int flags)
blk_mq_req_flags_t flags)
{
struct blk_mq_alloc_data alloc_data = { .flags = flags };
struct request *rq;
@@ -409,7 +409,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
EXPORT_SYMBOL(blk_mq_alloc_request);
struct request *blk_mq_alloc_request_hctx(struct request_queue *q,
unsigned int op, unsigned int flags, unsigned int hctx_idx)
unsigned int op, blk_mq_req_flags_t flags, unsigned int hctx_idx)
{
struct blk_mq_alloc_data alloc_data = { .flags = flags };
struct request *rq;