3.16.40-rc1 review patch. If anyone has any objections, please let me know.
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From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
commit 55679c8d23d191c24ad133abc5647e3054ca8de1 upstream.
Avoid that sparse complains about blkg_hint manipulations.
Fixes: a637120e4902 ("blkcg: use radix tree to index blkgs from blkcg")
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
block/blk-cgroup.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -47,7 +47,7 @@ struct blkcg {
spinlock_t lock;
struct radix_tree_root blkg_tree;
- struct blkcg_gq *blkg_hint;
+ struct blkcg_gq __rcu *blkg_hint;
struct hlist_head blkg_list;
/* for policies to test whether associated blkcg has changed */