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6607aa6f6b
: error: C++ style comments are not allowed in ISO C90 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. ^ error: (this will be reported only once per input file) Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
27 lines
676 B
C
27 lines
676 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <asm/shmparam.h>
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extern void flush_dcache_page(struct page *page);
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static inline unsigned long pages_do_alias(unsigned long addr1,
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unsigned long addr2)
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{
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return (addr1 ^ addr2) & (SHMLBA-1);
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}
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static inline void clear_user_page(void *addr, unsigned long vaddr,
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struct page *page)
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{
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clear_page(addr);
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if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK))
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flush_dcache_page(page);
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}
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static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
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struct page *page)
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{
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copy_page(to, from);
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if (pages_do_alias((unsigned long) to, vaddr & PAGE_MASK))
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flush_dcache_page(page);
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}
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