write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/arm/mm/flush.c
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@@ -1,11 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  linux/arch/arm/mm/flush.c
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  *
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  *  Copyright (C) 1995-2002 Russell King
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/module.h>
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 #include <linux/mm.h>
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@@ -207,18 +204,17 @@
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 	 * coherent with the kernels mapping.
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 	 */
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 	if (!PageHighMem(page)) {
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-		size_t page_size = PAGE_SIZE << compound_order(page);
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-		__cpuc_flush_dcache_area(page_address(page), page_size);
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+		__cpuc_flush_dcache_area(page_address(page), page_size(page));
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 	} else {
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 		unsigned long i;
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 		if (cache_is_vipt_nonaliasing()) {
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-			for (i = 0; i < (1 << compound_order(page)); i++) {
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+			for (i = 0; i < compound_nr(page); i++) {
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 				void *addr = kmap_atomic(page + i);
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 				__cpuc_flush_dcache_area(addr, PAGE_SIZE);
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 				kunmap_atomic(addr);
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 			}
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 		} else {
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-			for (i = 0; i < (1 << compound_order(page)); i++) {
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+			for (i = 0; i < compound_nr(page); i++) {
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 				void *addr = kmap_high_get(page + i);
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 				if (addr) {
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 					__cpuc_flush_dcache_area(addr, PAGE_SIZE);