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authorDennis Zhou (Facebook) <dennisszhou@gmail.com>2018-09-11 21:41:37 +0300
committerJens Axboe <axboe@kernel.dk>2018-09-22 05:29:19 +0300
commit101246ec02b54adf6a77180a01ccbe310add2c32 (patch)
tree95c35482f6a6b2c4fca4ab93282fc77b51cc4ca5 /block
parentb3b9f24f5fcc099c41f7dc1d02350635830888e5 (diff)
downloadlinux-101246ec02b54adf6a77180a01ccbe310add2c32.tar.xz
blkcg: rename blkg_try_get to blkg_tryget
blkg reference counting now uses percpu_ref rather than atomic_t. Let's make this consistent with css_tryget. This renames blkg_try_get to blkg_tryget and now returns a bool rather than the blkg or NULL. Signed-off-by: Dennis Zhou <dennisszhou@gmail.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/bio.c2
-rw-r--r--block/blk-cgroup.c3
-rw-r--r--block/blk-iolatency.c2
3 files changed, 3 insertions, 4 deletions
diff --git a/block/bio.c b/block/bio.c
index c39251e69447..1cd47f218200 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1974,7 +1974,7 @@ int bio_associate_blkg(struct bio *bio, struct blkcg_gq *blkg)
{
if (unlikely(bio->bi_blkg))
return -EBUSY;
- bio->bi_blkg = blkg_try_get_closest(blkg);
+ bio->bi_blkg = blkg_tryget_closest(blkg);
return 0;
}
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index ab3676e1e15e..76136bea7a7f 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1794,8 +1794,7 @@ void blkcg_maybe_throttle_current(void)
blkg = blkg_lookup(blkcg, q);
if (!blkg)
goto out;
- blkg = blkg_try_get(blkg);
- if (!blkg)
+ if (!blkg_tryget(blkg))
goto out;
rcu_read_unlock();
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index 2d848b2f8b87..27c14f8d2576 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -625,7 +625,7 @@ static void blkiolatency_timer_fn(struct timer_list *t)
* We could be exiting, don't access the pd unless we have a
* ref on the blkg.
*/
- if (!blkg_try_get(blkg))
+ if (!blkg_tryget(blkg))
continue;
iolat = blkg_to_lat(blkg);