On Wed, Sep 30, 2020 at 04:26:56PM +0800, Ming Lei wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
index 87d8a38bdea1..1d6ed9ca23dd 100644
--- a/include/linux/percpu-refcount.h
+++ b/include/linux/percpu-refcount.h
@@ -92,18 +92,23 @@ enum {
PERCPU_REF_ALLOW_REINIT = 1 << 2,
};
-struct percpu_ref {
+struct percpu_ref_data {
atomic_long_t count;
- /*
- * The low bit of the pointer indicates whether the ref is in percpu
- * mode; if set, then get/put will manipulate the atomic_t.
- */
- unsigned long percpu_count_ptr;
percpu_ref_func_t *release;
percpu_ref_func_t *confirm_switch;
bool force_atomic:1;
bool allow_reinit:1;
struct rcu_head rcu;
+ struct percpu_ref *ref;
+};
+
+struct percpu_ref {
+ /*
+ * The low bit of the pointer indicates whether the ref is in percpu
+ * mode; if set, then get/put will manipulate the atomic_t.
+ */
+ unsigned long percpu_count_ptr;
+ struct percpu_ref_data *data;
};
Can you please add a comment explaining why the two structs are split?
Thanks.
--
tejun