On Mon, Nov 08, 2021 at 04:05:24AM +0000, Matthew Wilcox (Oracle) wrote: > These architectures do not include asm-generic/cacheflush.h so need > to declare it themselves. In mainline mm/util.c implements flush_dcache_folio unless ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO is set. So I think you need to define that for csky and sparc.
