[PATCH] mm: cleanup bootmem (545b1ea9) · Commits · 戴 / test

mm/page_alloc.c

+7 −13

Original line number	Original line	Diff line number	Diff line
	@@ -55,7 +55,6 @@ unsigned long totalhigh_pages __read_mostly;
	long nr_swap_pages;		long nr_swap_pages;
	int percpu_pagelist_fraction;		int percpu_pagelist_fraction;

	static void fastcall free_hot_cold_page(struct page *page, int cold);
	static void __free_pages_ok(struct page *page, unsigned int order);		static void __free_pages_ok(struct page *page, unsigned int order);

	/*		/*
	@@ -448,28 +447,23 @@ void fastcall __init __free_pages_bootmem(struct page *page, unsigned int order)
	if (order == 0) {		if (order == 0) {
	__ClearPageReserved(page);		__ClearPageReserved(page);
	set_page_count(page, 0);		set_page_count(page, 0);
			set_page_refs(page, 0);
	free_hot_cold_page(page, 0);		__free_page(page);
	} else {		} else {
	LIST_HEAD(list);
	int loop;		int loop;

			prefetchw(page);
	for (loop = 0; loop < BITS_PER_LONG; loop++) {		for (loop = 0; loop < BITS_PER_LONG; loop++) {
	struct page *p = &page[loop];		struct page *p = &page[loop];

	if (loop + 16 < BITS_PER_LONG)		if (loop + 1 < BITS_PER_LONG)
	prefetchw(p + 16);		prefetchw(p + 1);
	__ClearPageReserved(p);		__ClearPageReserved(p);
	set_page_count(p, 0);		set_page_count(p, 0);
	}		}

	arch_free_page(page, order);		set_page_refs(page, order);
			__free_pages(page, order);
	mod_page_state(pgfree, 1 << order);

	list_add(&page->lru, &list);
	kernel_map_pages(page, 1 << order, 0);
	free_pages_bulk(page_zone(page), 1, &list, order);
	}		}
	}		}