add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/nds32/mm/cacheflush.c
..
..
@@ -35,9 +35,8 @@
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 	kunmap_atomic((void *)kaddr);
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 	local_irq_restore(flags);
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 }
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-EXPORT_SYMBOL(flush_icache_page);
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-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
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+void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
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 	                     unsigned long addr, int len)
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 {
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 	unsigned long kaddr;