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27 lines
676 B
27 lines
676 B
/* 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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