To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.
Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
---
mm/backing-dev.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 3bfed5ab..ffb77a1 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -410,8 +410,8 @@ wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp)
while (*node != NULL) {
parent = *node;
- congested = container_of(parent, struct bdi_writeback_congested,
- rb_node);
+ congested = rb_entry(parent, struct bdi_writeback_congested,
+ rb_node);
if (congested->blkcg_id < blkcg_id)
node = &parent->rb_left;
else if (congested->blkcg_id > blkcg_id)
--
2.9.3
--
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