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-rw-r--r--kernel/bpf/devmap.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 4d42f6ed6c..a936c704d4 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -418,6 +418,16 @@ void __dev_flush(void)
}
}
+#ifdef CONFIG_DEBUG_NET
+bool dev_check_flush(void)
+{
+ if (list_empty(this_cpu_ptr(&dev_flush_list)))
+ return false;
+ __dev_flush();
+ return true;
+}
+#endif
+
/* Elements are kept alive by RCU; either by rcu_read_lock() (from syscall) or
* by local_bh_disable() (from XDP calls inside NAPI). The
* rcu_read_lock_bh_held() below makes lockdep accept both.