write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/s390/mm/page-states.c
..
..
@@ -21,17 +21,11 @@
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 static int __init cmma(char *str)
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 {
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-	char *parm;
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+	bool enabled;
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-	parm = strstrip(str);
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-	if (strcmp(parm, "yes") == 0 || strcmp(parm, "on") == 0) {
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-		cmma_flag = 1;
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-		return 1;
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-	}
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-	cmma_flag = 0;
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-	if (strcmp(parm, "no") == 0 || strcmp(parm, "off") == 0)
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-		return 1;
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-	return 0;
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+	if (!kstrtobool(str, &enabled))
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+		cmma_flag = enabled;
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+	return 1;
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 }
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 __setup("cmma=", cmma);
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..
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@@ -189,9 +183,9 @@
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 void __init cmma_init_nodat(void)
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 {
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-	struct memblock_region *reg;
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 	struct page *page;
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 	unsigned long start, end, ix;
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+	int i;
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 	if (cmma_flag < 2)
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 		return;
..
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@@ -199,9 +193,7 @@
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 	mark_kernel_pgd();
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 	/* Set all kernel pages not used for page tables to stable/no-dat */
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-	for_each_memblock(memory, reg) {
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-		start = memblock_region_memory_base_pfn(reg);
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-		end = memblock_region_memory_end_pfn(reg);
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+	for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, NULL) {
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 		page = pfn_to_page(start);
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 		for (ix = start; ix < end; ix++, page++) {
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 			if (__test_and_clear_bit(PG_arch_1, &page->flags))