blkcg: don't use blkg->plid in stat related functions

blkg is scheduled to be unified for all policies and thus there won't
be one-to-one mapping from blkg to policy.  Update stat related
functions to take explicit @pol or @plid arguments and not use
blkg->plid.

This is painful for now but most of specific stat interface functions
will be replaced with a handful of generic helpers.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 3 insertions, 1 deletions

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 153ba509446b..b2fddaf20b98 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -588,7 +588,8 @@ static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio)
         tg->bytes_disp[rw] += bio->bi_size;
         tg->io_disp[rw]++;
 
-        blkiocg_update_dispatch_stats(tg_to_blkg(tg), bio->bi_size, rw, sync);
+        blkiocg_update_dispatch_stats(tg_to_blkg(tg), &blkio_policy_throtl,
+                                      bio->bi_size, rw, sync);
 }
 
 static void throtl_add_bio_tg(struct throtl_data *td, struct throtl_grp *tg,
@@ -1000,6 +1001,7 @@ bool blk_throtl_bio(struct request_queue *q, struct bio *bio)
         if (tg) {
                 if (tg_no_rule_group(tg, rw)) {
                         blkiocg_update_dispatch_stats(tg_to_blkg(tg),
+                                                      &blkio_policy_throtl,
                                                       bio->bi_size, rw,
                                                       rw_is_sync(bio->bi_rw));
                         goto out_unlock_rcu;