The bfq schedule now uses css_next_descendant_pre directly after
the stats functionality depending on it has been from the core
blk-cgroup code to bfq. Export the symbol so that bfq can still
be build modular.
Fixes: d6258980daf2 ("bfq-iosched: move bfq_stat_recursive_sum into the only caller")
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
kernel/cgroup/cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 426a0026225c..30aba80858e3 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -4221,6 +4221,7 @@ css_next_descendant_pre(struct cgroup_subsys_state *pos,
return NULL;
}
+EXPORT_SYMBOL_GPL(css_next_descendant_pre);
/**
* css_rightmost_descendant - return the rightmost descendant of a css
--
2.20.1
