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Subject[RFC PATCH v1 20/33] mm/score: use common help functions to free reserved pages
Date
Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
---
arch/score/mm/init.c | 33 +++++----------------------------
1 file changed, 5 insertions(+), 28 deletions(-)

diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
index cee6bce..1592aad 100644
--- a/arch/score/mm/init.c
+++ b/arch/score/mm/init.c
@@ -43,7 +43,7 @@ EXPORT_SYMBOL_GPL(empty_zero_page);

static struct kcore_list kcore_mem, kcore_vmalloc;

-static unsigned long setup_zero_page(void)
+static void setup_zero_page(void)
{
struct page *page;

@@ -52,9 +52,7 @@ static unsigned long setup_zero_page(void)
panic("Oh boy, that early out of memory?");

page = virt_to_page((void *) empty_zero_page);
- SetPageReserved(page);
-
- return 1UL;
+ mark_page_reserved(page);
}

#ifndef CONFIG_NEED_MULTIPLE_NODES
@@ -84,7 +82,7 @@ void __init mem_init(void)

high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
totalram_pages += free_all_bootmem();
- totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */
+ setup_zero_page(); /* Setup zeroed pages. */
reservedpages = 0;

for (tmp = 0; tmp < max_low_pfn; tmp++)
@@ -109,37 +107,16 @@ void __init mem_init(void)
}
#endif /* !CONFIG_NEED_MULTIPLE_NODES */

-static void free_init_pages(const char *what, unsigned long begin, unsigned long end)
-{
- unsigned long pfn;
-
- for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
- struct page *page = pfn_to_page(pfn);
- void *addr = phys_to_virt(PFN_PHYS(pfn));
-
- ClearPageReserved(page);
- init_page_count(page);
- memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
- __free_page(page);
- totalram_pages++;
- }
- printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
-}
-
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- free_init_pages("initrd memory",
- virt_to_phys((void *) start),
- virt_to_phys((void *) end));
+ free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif

void __init_refok free_initmem(void)
{
- free_init_pages("unused kernel memory",
- __pa(&__init_begin),
- __pa(&__init_end));
+ free_initmem_default(POISON_FREE_INITMEM);
}

unsigned long pgd_current;
--
1.7.9.5


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