fs: fix kabi broken introduced by fixing CVE-2020-14381

hulk inclusion
CVE: CVE-2020-14381

--------------------------------

Fix kabi broken introduced by fixing CVE-2020-14381.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: NJason Yan <yanaijie@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/linux/fs.h

@@ -683,7 +683,6 @@ struct inode {
 		struct rcu_head		i_rcu;
 	};
 	atomic64_t		i_version;
-	atomic64_t		i_sequence; /* see futex */
 	atomic_t		i_count;
 	atomic_t		i_dio_count;
 	atomic_t		i_writecount;
@@ -715,7 +714,11 @@ struct inode {
 
 	void			*i_private; /* fs or device private pointer */
 
+#ifndef __GENKSYMS__
+	atomic64_t		i_sequence; /* see futex */
+#else
 	KABI_RESERVE(1)
+#endif
 	KABI_RESERVE(2)
 } __randomize_layout;