Commit c9418368 authored by Jiang Liu's avatar Jiang Liu Committed by Linus Torvalds

mm/metag: use common help functions to free reserved pages

Use common help functions to free reserved pages.
Signed-off-by: default avatarJiang Liu <jiang.liu@huawei.com>
Cc: James Hogan <james.hogan@imgtec.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d2309a19
......@@ -412,32 +412,15 @@ void __init mem_init(void)
return;
}
static void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
unsigned long addr;
for (addr = begin; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
free_page(addr);
totalram_pages++;
}
pr_info("Freeing %s: %luk freed\n", what, (end - begin) >> 10);
}
void free_initmem(void)
{
free_init_pages("unused kernel memory",
(unsigned long)(&__init_begin),
(unsigned long)(&__init_end));
free_initmem_default(POISON_FREE_INITMEM);
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
end = end & PAGE_MASK;
free_init_pages("initrd memory", start, end);
free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif
......
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