From: Randy Dunlap rdunlap@infradead.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@intel.com Signed-off-by: Randy Dunlap rdunlap@infradead.org Cc: Vineet Gupta vgupta@synopsys.com Cc: linux-snps-arc@lists.infradead.org Cc: Dan Williams dan.j.williams@intel.com #Acked-by: Vineet Gupta vgupta@synopsys.com # v1 Cc: Andrew Morton akpm@linux-foundation.org Cc: Matthew Wilcox willy@infradead.org Cc: Jan Kara jack@suse.cz Cc: linux-fsdevel@vger.kernel.org Cc: linux-nvdimm@lists.01.org #Reviewed-by: Ira Weiny ira.weiny@intel.com # v2 Signed-off-by: Vineet Gupta vgupta@synopsys.com Signed-off-by: Sasha Levin sashal@kernel.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 0a32e8cfd074d..bcd1920ae75a3 100644 --- a/arch/arc/include/asm/page.h +++ b/arch/arc/include/asm/page.h @@ -10,6 +10,7 @@ #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;