Hi Randy, On Fri, Apr 08, 2022 at 11:02:15PM -0700, Randy Dunlap wrote: > Add <linux/mm.h> to cacheflush_32.h just as in cacheflush_64.h. Just add a forward declaration like this to fix it: struct page; No need to pull in a header file when a forward is enough. Maybe we could simplify sparc64 in a similar way, but that is another patch and it may require extra work in other files anyway. Sam