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ARC: export clear_user_page() for modules
[ Upstream commit6b5ff0405e
] 0day bot reports a build error: ERROR: modpost: "clear_user_page" [drivers/media/v4l2-core/videobuf-dma-sg.ko] undefined! so export it in arch/arc/ to fix the build error. In most ARCHes, clear_user_page() is a macro. OTOH, in a few ARCHes it is a function and needs to be exported. PowerPC exported it in 2004. It looks like nds32 and nios2 still need to have it exported. Fixes:4102b53392
("ARC: [mm] Aliasing VIPT dcache support 2/4") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: linux-snps-arc@lists.infradead.org Signed-off-by: Vineet Gupta <vgupta@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -1123,7 +1123,7 @@ void clear_user_page(void *to, unsigned long u_vaddr, struct page *page)
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clear_page(to);
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clear_bit(PG_dc_clean, &page->flags);
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}
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EXPORT_SYMBOL(clear_user_page);
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/**********************************************************************
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* Explicit Cache flush request from user space via syscall
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