disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/ptr_ring.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  *	Definitions for the 'struct ptr_ring' datastructure.
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  *
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@@ -5,11 +6,6 @@
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  *		Michael S. Tsirkin <mst@redhat.com>
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  *
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  *	Copyright (C) 2016 Red Hat, Inc.
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- *
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- *	This program is free software; you can redistribute it and/or modify it
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- *	under the terms of the GNU General Public License as published by the
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- *	Free Software Foundation; either version 2 of the License, or (at your
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- *	option) any later version.
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  *
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  *	This is a limited-size FIFO maintaining pointers in FIFO order, with
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  *	one CPU producing entries and another consuming entries from a FIFO.
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@@ -26,8 +22,8 @@
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 #include <linux/cache.h>
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 #include <linux/types.h>
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 #include <linux/compiler.h>
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-#include <linux/cache.h>
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 #include <linux/slab.h>
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+#include <linux/mm.h>
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 #include <asm/errno.h>
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 #endif
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@@ -111,7 +107,7 @@
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 		return -ENOSPC;
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 	/* Make sure the pointer we are storing points to a valid data. */
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-	/* Pairs with smp_read_barrier_depends in __ptr_ring_consume. */
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+	/* Pairs with the dependency ordering in __ptr_ring_consume. */
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 	smp_wmb();
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 	WRITE_ONCE(r->queue[r->producer++], ptr);