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Date: Tue, 12 Jan 2021 07:57:45 -0500 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Randy Dunlap <rdunlap@...radead.org>, kernel test robot <lkp@...el.com>, Vineet Gupta <vgupta@...opsys.com>, linux-snps-arc@...ts.infradead.org, Dan Williams <dan.j.williams@...el.com>, Andrew Morton <akpm@...ux-foundation.org>, Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org, linux-nvdimm@...ts.01.org, Sasha Levin <sashal@...nel.org> Subject: [PATCH AUTOSEL 4.14 09/13] arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC From: Randy Dunlap <rdunlap@...radead.org> [ Upstream commit 8a48c0a3360bf2bf4f40c980d0ec216e770e58ee ] fs/dax.c uses copy_user_page() but ARC does not provide that interface, resulting in a build error. Provide copy_user_page() in <asm/page.h>. ../fs/dax.c: In function 'copy_cow_page_dax': ../fs/dax.c:702:2: error: implicit declaration of function 'copy_user_page'; did you mean 'copy_to_user_page'? [-Werror=implicit-function-declaration] Reported-by: kernel test robot <lkp@...el.com> Signed-off-by: Randy Dunlap <rdunlap@...radead.org> Cc: Vineet Gupta <vgupta@...opsys.com> Cc: linux-snps-arc@...ts.infradead.org Cc: Dan Williams <dan.j.williams@...el.com> #Acked-by: Vineet Gupta <vgupta@...opsys.com> # v1 Cc: Andrew Morton <akpm@...ux-foundation.org> Cc: Matthew Wilcox <willy@...radead.org> Cc: Jan Kara <jack@...e.cz> Cc: linux-fsdevel@...r.kernel.org Cc: linux-nvdimm@...ts.01.org #Reviewed-by: Ira Weiny <ira.weiny@...el.com> # v2 Signed-off-by: Vineet Gupta <vgupta@...opsys.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/arc/include/asm/page.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h index 09ddddf71cc50..a70fef79c4055 100644 --- a/arch/arc/include/asm/page.h +++ b/arch/arc/include/asm/page.h @@ -13,6 +13,7 @@ #ifndef __ASSEMBLY__ #define clear_page(paddr) memset((paddr), 0, PAGE_SIZE) +#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) struct vm_area_struct; -- 2.27.0
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