[PATCH] ovl: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
---
 fs/overlayfs/readdir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index f241b4e..401bdc4 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -58,7 +58,7 @@ struct ovl_dir_file {
 
 static struct ovl_cache_entry *ovl_cache_entry_from_node(struct rb_node *n)
 {
-	return container_of(n, struct ovl_cache_entry, node);
+	return rb_entry(n, struct ovl_cache_entry, node);
 }
 
 static struct ovl_cache_entry *ovl_cache_entry_find(struct rb_root *root,
-- 
2.9.3