VALID_PAGE() has been removed from kernel long time ago,
so fix the comment.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
/*
* Conversion between a struct page and a physical address.
*
- * Note: when converting an unknown physical address to a
- * struct page, the resulting pointer must be validated
- * using VALID_PAGE(). It must return an invalid struct page
- * for any physical address not corresponding to a system
- * RAM address.
- *
* page_to_pfn(page) convert a struct page * to a PFN number
* pfn_to_page(pfn) convert a _valid_ PFN number to struct page *
*