WIP: update tizen_qemu_defconfig

[platform/kernel/linux-starfive.git] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index c30419a..bf5525c 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -380,6 +380,15 @@ static LIST_HEAD(offline_cgwbs);
 static void cleanup_offline_cgwbs_workfn(struct work_struct *work);
 static DECLARE_WORK(cleanup_offline_cgwbs_work, cleanup_offline_cgwbs_workfn);
 
+static void cgwb_free_rcu(struct rcu_head *rcu_head)
+{
+       struct bdi_writeback *wb = container_of(rcu_head,
+                       struct bdi_writeback, rcu);
+
+       percpu_ref_exit(&wb->refcnt);
+       kfree(wb);
+}
+
 static void cgwb_release_workfn(struct work_struct *work)
 {
        struct bdi_writeback *wb = container_of(work, struct bdi_writeback,
@@ -402,11 +411,10 @@ static void cgwb_release_workfn(struct work_struct *work)
        list_del(&wb->offline_node);
        spin_unlock_irq(&cgwb_lock);
 
-       percpu_ref_exit(&wb->refcnt);
        wb_exit(wb);
        bdi_put(bdi);
        WARN_ON_ONCE(!list_empty(&wb->b_attached));
-       kfree_rcu(wb, rcu);
+       call_rcu(&wb->rcu, cgwb_free_rcu);
 }
 
 static void cgwb_release(struct percpu_ref *refcnt)