From: Tao Ma <boyu...@taobao.com>
All callers of throtl_update_dispatch_stats uses tg_to_blkg and then
in this function we use blkg_to_tg again to change it back. So remove
all these useless conversion and use throtl_grp directly to call
throtl_update_dispatch_stats.
Cc: Tejun Heo <t...@kernel.org>
Cc: Vivek Goyal <vgo...@redhat.com>
Cc: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Tao Ma <boyu...@taobao.com>
---
block/blk-throttle.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index e287c19..1588c2d 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -675,10 +675,9 @@ static bool tg_may_dispatch(struct throtl_data *td, struct
throtl_grp *tg,
return 0;
}
-static void throtl_update_dispatch_stats(struct blkcg_gq *blkg, u64 bytes,
+static void throtl_update_dispatch_stats(struct throtl_grp *tg, u64 bytes,
int rw)
{
- struct throtl_grp *tg = blkg_to_tg(blkg);
struct tg_stats_cpu *stats_cpu;
unsigned long flags;
@@ -709,7 +708,7 @@ static void throtl_charge_bio(struct throtl_grp *tg, struct
bio *bio)
tg->bytes_disp[rw] += bio->bi_size;
tg->io_disp[rw]++;
- throtl_update_dispatch_stats(tg_to_blkg(tg), bio->bi_size, bio->bi_rw);
+ throtl_update_dispatch_stats(tg, bio->bi_size, bio->bi_rw);
}
static void throtl_add_bio_tg(struct throtl_data *td, struct throtl_grp *tg,
@@ -1133,7 +1132,7 @@ bool blk_throtl_bio(struct request_queue *q, struct bio
*bio)
tg = throtl_lookup_tg(td, blkcg);
if (tg) {
if (tg_no_rule_group(tg, rw)) {
- throtl_update_dispatch_stats(tg_to_blkg(tg),
+ throtl_update_dispatch_stats(tg,
bio->bi_size, bio->bi_rw);
goto out_unlock_rcu;
}
--
1.7.0.4
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