/* SPDX-License-Identifier: GPL-2.0 */ #include <asm/shmparam.h> extern void flush_dcache_page(struct page *page); static inline unsigned long pages_do_alias(unsigned long addr1, unsigned long addr2) { return (addr1 ^ addr2) & (SHMLBA-1); } static inline void clear_user_page(void *addr, unsigned long vaddr, struct page *page) { clear_page(addr); if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK)) flush_dcache_page(page); } static inline void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *page) { copy_page(to, from); if (pages_do_alias((unsigned long) to, vaddr & PAGE_MASK)) flush_dcache_page(page); }