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block: add a op_is_flush helper

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This centralizes the checks for bios that needs to be go into the flush
state machine.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-01-27 08:30:47 -07:00
committed by Jens Axboe
parent c13660a08c
commit f73f44eb00
7 changed files with 26 additions and 28 deletions
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block/blk-mq-sched.c
+2 -3
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@@ -111,7 +111,6 @@ struct request *blk_mq_sched_get_request(struct request_queue *q,
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
struct request *rq;
const bool is_flush = op & (REQ_PREFLUSH | REQ_FUA);
blk_queue_enter_live(q);
ctx = blk_mq_get_ctx(q);
@@ -126,7 +125,7 @@ struct request *blk_mq_sched_get_request(struct request_queue *q,
* Flush requests are special and go directly to the
* dispatch list.
*/
if (!is_flush && e->type->ops.mq.get_request) {
if (!op_is_flush(op) && e->type->ops.mq.get_request) {
rq = e->type->ops.mq.get_request(q, op, data);
if (rq)
rq->rq_flags |= RQF_QUEUED;
@@ -139,7 +138,7 @@ struct request *blk_mq_sched_get_request(struct request_queue *q,
}
if (rq) {
if (!is_flush) {
if (!op_is_flush(op)) {
rq->elv.icq = NULL;
if (e && e->type->icq_cache)
blk_mq_sched_assign_ioc(q, rq, bio);