Commit e5a94f56 authored by Shaohua Li's avatar Shaohua Li Committed by Jens Axboe
Browse files

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: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent 05eb0f25

block/blk-throttle.c

+2 −2
Original line number Diff line number Diff line
@@ -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)

{

	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 */

	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)) {

			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();

			return 0;

		}