From: Shaohua Li <shaohua.li@intel.com>
Date: Mon, 1 Aug 2011 08:31:06 +0000 (+0200)
Subject: blk-throttle: correctly determine sync bio
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=e5a94f56845bb4b272d82e84b5a1e2080b07ba82;p=~shefty%2Frdma-dev.git

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>
---

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index f6a79412050..a19f58c6fc3 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -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;
 		}