On Thu, May 06, 2021 at 05:36:54AM +0800, kernel test robot wrote: > config: nds32-defconfig (attached as .config) > fs/iomap/buffered-io.c: In function '__iomap_write_end': > >> fs/iomap/buffered-io.c:645:2: error: implicit declaration of function 'flush_dcache_folio'; did you mean 'flush_dcache_page'? [-Werror=implicit-function-declaration] > 645 | flush_dcache_folio(folio); > | ^~~~~~~~~~~~~~~~~~ > | flush_dcache_page > cc1: some warnings being treated as errors Argh, nds32 doesn't (always) include asm-generic/cacheflush.h, so it doesn't pick up the generic implementation of flush_dcache_folio(). Copy-and-pasted it to nds32. Thanks.
