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block: prepare elevator to use REQ_OPs.

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This patch converts the elevator code to use separate variables
for the operation and flags, and to check req_op for the REQ_OP.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Mike Christie
2016-06-05 14:32:13 -05:00
committed by Jens Axboe
parent cc6e3b1092
commit ba568ea0a2
4 changed files with 8 additions and 9 deletions
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2
block/blk-core.c
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@@ -1081,7 +1081,7 @@ static struct request *__get_request(struct request_list *rl, int op,
if (unlikely(blk_queue_dying(q)))
return ERR_PTR(-ENODEV);
may_queue = elv_may_queue(q, op | op_flags);
may_queue = elv_may_queue(q, op, op_flags);
if (may_queue == ELV_MQUEUE_NO)
goto rq_starved;