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block: rename bio bi_rw to bi_opf

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Since commit 63a4cc2486, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.

No intended functional changes in this commit.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2016-08-05 15:35:16 -06:00
commit 1eff9d322a
51 changed files with 158 additions and 157 deletions
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8
block/blk-throttle.c
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@ -821,8 +821,8 @@ static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio)
* second time when it eventually gets issued. Set it when a bio
* is being charged to a tg.
*/
if (!(bio->bi_rw & REQ_THROTTLED))
bio->bi_rw |= REQ_THROTTLED;
if (!(bio->bi_opf & REQ_THROTTLED))
bio->bi_opf |= REQ_THROTTLED;
}
/**
@ -1399,7 +1399,7 @@ bool blk_throtl_bio(struct request_queue *q, struct blkcg_gq *blkg,
WARN_ON_ONCE(!rcu_read_lock_held());
/* see throtl_charge_bio() */
if ((bio->bi_rw & REQ_THROTTLED) || !tg->has_rules[rw])
if ((bio->bi_opf & REQ_THROTTLED) || !tg->has_rules[rw])
goto out;
spin_lock_irq(q->queue_lock);
@ -1478,7 +1478,7 @@ out:
* being issued.
*/
if (!throttled)
bio->bi_rw &= ~REQ_THROTTLED;
bio->bi_opf &= ~REQ_THROTTLED;
return throttled;
}