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blk-throttle: correctly determine sync bio 

read request is always sync. Using rw_is_sync() to determine
if a bio is sync.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Shaohua Li 2011-08-01 10:31:06 +02:00 committed by Jens Axboe
parent 05eb0f252b
commit e5a94f5684
1 changed files with 2 additions and 2 deletions
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4
block/blk-throttle.c
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@ -746,7 +746,7 @@ static bool tg_may_dispatch(struct throtl_data *td, struct throtl_grp *tg,
static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio) static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio)
{ {
bool rw = bio_data_dir(bio); bool rw = bio_data_dir(bio);
bool sync = bio->bi_rw & REQ_SYNC; bool sync = rw_is_sync(bio->bi_rw);
/* Charge the bio to the group */ /* Charge the bio to the group */
tg->bytes_disp[rw] += bio->bi_size; tg->bytes_disp[rw] += bio->bi_size;
@ -1150,7 +1150,7 @@ int blk_throtl_bio(struct request_queue *q, struct bio **biop)
if (tg_no_rule_group(tg, rw)) { if (tg_no_rule_group(tg, rw)) {
blkiocg_update_dispatch_stats(&tg->blkg, bio->bi_size, blkiocg_update_dispatch_stats(&tg->blkg, bio->bi_size,
rw, bio->bi_rw & REQ_SYNC); rw, rw_is_sync(bio->bi_rw));
rcu_read_unlock(); rcu_read_unlock();
return 0; return 0;
} }