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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org On 10/6/20 7:54 PM, Randy Dunlap wrote: > From: Randy Dunlap > > fs/dax.c uses copy_user_page() but ARC does not provide that interface, > resulting in a build error. > > Provide copy_user_page() in (beside copy_page()) and > add to fs/dax.c to fix the build error. > > ../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] > > Fixes: cccbce671582 ("filesystem-dax: convert to dax_direct_access()") > Reported-by: kernel test robot > Signed-off-by: Randy Dunlap > Cc: Vineet Gupta > Cc: linux-snps-arc@lists.infradead.org > Cc: Dan Williams > --- > Vineet, This patch fixes the build error but is it correct for ARC? Yep this looks good. Nothing special needs to be done for user pages on ARC. Acked-by: Vineet Gupta Thx, -Vineet > > arch/arc/include/asm/page.h | 1 + > fs/dax.c | 1 + > 2 files changed, 2 insertions(+) > > --- lnx-59-rc7.orig/fs/dax.c > +++ lnx-59-rc7/fs/dax.c > @@ -25,6 +25,7 @@ > #include > #include > #include > +#include > #include > > #define CREATE_TRACE_POINTS > --- lnx-59-rc7.orig/arch/arc/include/asm/page.h > +++ lnx-59-rc7/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; > > _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc