blkcg: misc preparations for unified hierarchy interface

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / block / blk-cgroup.c

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 8ee1ca4..b5e72d7 100644 (file)
--- 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