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authorTejun Heo <tj@kernel.org>2015-08-18 14:55:33 -0700
committerJens Axboe <axboe@fb.com>2015-08-18 15:49:18 -0700
commitdd165eb3bb4ef16bcdb75417add40633f38c52b8 (patch)
treea22ac531f2e8e95401ded9fbd34bbcf5a5cee834
parent69948b070ee2bc3cc253e862cbe2bb09b173d7bd (diff)
downloadlinux-0-day-dd165eb3bb4ef16bcdb75417add40633f38c52b8.tar.gz
linux-0-day-dd165eb3bb4ef16bcdb75417add40633f38c52b8.tar.xz
blkcg: misc preparations for unified hierarchy interface
* Export blkg_dev_name() * Drop unnecessary @cft from __cfq_set_weight(). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--block/blk-cgroup.c3
-rw-r--r--block/cfq-iosched.c8
-rw-r--r--include/linux/blk-cgroup.h1
3 files changed, 7 insertions, 5 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 8ee1ca4d4f2f8..b5e72d756be1f 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -462,13 +462,14 @@ static int blkcg_reset_stats(struct cgroup_subsys_state *css,
return 0;
}
-static const char *blkg_dev_name(struct blkcg_gq *blkg)
+const char *blkg_dev_name(struct blkcg_gq *blkg)
{
/* some drivers (floppy) instantiate a queue w/o disk registered */
if (blkg->q->backing_dev_info.dev)
return dev_name(blkg->q->backing_dev_info.dev);
return NULL;
}
+EXPORT_SYMBOL_GPL(blkg_dev_name);
/**
* blkcg_print_blkgs - helper for printing per-blkg data
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index ea88d8905bbd6..7a7230136e439 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1788,8 +1788,8 @@ static ssize_t cfqg_set_leaf_weight_device(struct kernfs_open_file *of,
return __cfqg_set_weight_device(of, buf, nbytes, off, true);
}
-static int __cfq_set_weight(struct cgroup_subsys_state *css, struct cftype *cft,
- u64 val, bool is_leaf_weight)
+static int __cfq_set_weight(struct cgroup_subsys_state *css, u64 val,
+ bool is_leaf_weight)
{
struct blkcg *blkcg = css_to_blkcg(css);
struct blkcg_gq *blkg;
@@ -1834,13 +1834,13 @@ out:
static int cfq_set_weight(struct cgroup_subsys_state *css, struct cftype *cft,
u64 val)
{
- return __cfq_set_weight(css, cft, val, false);
+ return __cfq_set_weight(css, val, false);
}
static int cfq_set_leaf_weight(struct cgroup_subsys_state *css,
struct cftype *cft, u64 val)
{
- return __cfq_set_weight(css, cft, val, true);
+ return __cfq_set_weight(css, val, true);
}
static int cfqg_print_stat(struct seq_file *sf, void *v)
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 85a4d989ae437..b270aef519c65 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -182,6 +182,7 @@ int blkcg_activate_policy(struct request_queue *q,
void blkcg_deactivate_policy(struct request_queue *q,
const struct blkcg_policy *pol);
+const char *blkg_dev_name(struct blkcg_gq *blkg);
void blkcg_print_blkgs(struct seq_file *sf, struct blkcg *blkcg,
u64 (*prfill)(struct seq_file *,
struct blkg_policy_data *, int),