diff options
| author | Tejun Heo <tj@kernel.org> | 2012-04-14 00:11:27 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-04-20 12:06:06 +0400 |
| commit | ec399347d39fb2337ebace928cf4a2855bd0ec37 (patch) | |
| tree | d95efeb004e8da914f7d3c726cd059b422443694 /block/blk-cgroup.c | |
| parent | bc0d6501a844392ab6ad419d7ca5af4693b6afac (diff) | |
| download | linux-ec399347d39fb2337ebace928cf4a2855bd0ec37.tar.xz | |
blkcg: use @pol instead of @plid in update_root_blkg_pd() and blkcg_print_blkgs()
The two functions were taking "enum blkio_policy_id plid". Make them
take "const struct blkio_policy_type *pol" instead.
This is to prepare for per-queue policy activation and doesn't cause
any functional difference.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index af665fe7f4f2..b1231524a097 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -226,17 +226,17 @@ static void blkg_destroy(struct blkio_group *blkg) * aren't shot down. This broken and racy implementation is temporary. * Eventually, blkg shoot down will be replaced by proper in-place update. */ -void update_root_blkg_pd(struct request_queue *q, enum blkio_policy_id plid) +void update_root_blkg_pd(struct request_queue *q, + const struct blkio_policy_type *pol) { - struct blkio_policy_type *pol = blkio_policy[plid]; struct blkio_group *blkg = blkg_lookup(&blkio_root_cgroup, q); struct blkg_policy_data *pd; if (!blkg) return; - kfree(blkg->pd[plid]); - blkg->pd[plid] = NULL; + kfree(blkg->pd[pol->plid]); + blkg->pd[pol->plid] = NULL; if (!pol) return; @@ -244,7 +244,7 @@ void update_root_blkg_pd(struct request_queue *q, enum blkio_policy_id plid) pd = kzalloc(sizeof(*pd) + pol->pdata_size, GFP_KERNEL); WARN_ON_ONCE(!pd); - blkg->pd[plid] = pd; + blkg->pd[pol->plid] = pd; pd->blkg = blkg; pol->ops.blkio_init_group_fn(blkg); } @@ -360,7 +360,8 @@ static const char *blkg_dev_name(struct blkio_group *blkg) */ void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, u64 (*prfill)(struct seq_file *, void *, int), - int pol, int data, bool show_total) + const struct blkio_policy_type *pol, int data, + bool show_total) { struct blkio_group *blkg; struct hlist_node *n; @@ -368,8 +369,8 @@ void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, spin_lock_irq(&blkcg->lock); hlist_for_each_entry(blkg, n, &blkcg->blkg_list, blkcg_node) - if (blkg->pd[pol]) - total += prfill(sf, blkg->pd[pol]->pdata, data); + if (blkg->pd[pol->plid]) + total += prfill(sf, blkg->pd[pol->plid]->pdata, data); spin_unlock_irq(&blkcg->lock); if (show_total) @@ -739,7 +740,7 @@ void blkio_policy_register(struct blkio_policy_type *blkiop) BUG_ON(blkio_policy[blkiop->plid]); blkio_policy[blkiop->plid] = blkiop; list_for_each_entry(q, &all_q_list, all_q_node) - update_root_blkg_pd(q, blkiop->plid); + update_root_blkg_pd(q, blkiop); blkcg_bypass_end(); @@ -765,7 +766,7 @@ void blkio_policy_unregister(struct blkio_policy_type *blkiop) blkio_policy[blkiop->plid] = NULL; list_for_each_entry(q, &all_q_list, all_q_node) - update_root_blkg_pd(q, blkiop->plid); + update_root_blkg_pd(q, blkiop); blkcg_bypass_end(); mutex_unlock(&blkcg_pol_mutex); |