From: Yu Kuai <yukuai3@xxxxxxxxxx>
Currently, if config is enabled, then ioprio is always enabled by
default from blkcg_init_disk(), hence there is no point to check if
the policy is enabled from blkg in ioprio_blkcg_from_bio(). Hence remove
it and get blkcg directly from bio.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
block/blk-ioprio.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/block/blk-ioprio.c b/block/blk-ioprio.c
index 4051fada01f1..ae52b418e984 100644
--- a/block/blk-ioprio.c
+++ b/block/blk-ioprio.c
@@ -84,16 +84,6 @@ ioprio_blkcg_from_css(struct cgroup_subsys_state *css)
return blkcg_to_ioprio_blkcg(css_to_blkcg(css));
}
-static struct ioprio_blkcg *ioprio_blkcg_from_bio(struct bio *bio)
-{
- struct blkg_policy_data *pd = blkg_to_pd(bio->bi_blkg, &ioprio_policy);
-
- if (!pd)
- return NULL;
-
- return blkcg_to_ioprio_blkcg(pd->blkg->blkcg);
-}
-
static int ioprio_show_prio_policy(struct seq_file *sf, void *v)
{
struct ioprio_blkcg *blkcg = ioprio_blkcg_from_css(seq_css(sf));
@@ -186,7 +176,7 @@ static struct blkcg_policy ioprio_policy = {
void blkcg_set_ioprio(struct bio *bio)
{
- struct ioprio_blkcg *blkcg = ioprio_blkcg_from_bio(bio);
+ struct ioprio_blkcg *blkcg = blkcg_to_ioprio_blkcg(bio->bi_blkg->blkcg);
u16 prio;
if (!blkcg || blkcg->prio_policy == POLICY_NO_CHANGE)
--
2.39.2
