On Mon, Feb 23, 2015 at 01:40:25PM -0500, Matthew Wilcox wrote: > On Mon, Feb 23, 2015 at 12:29:45PM +0100, Arnd Bergmann wrote: > > The DAX implementation relies on the architecture to provide a working > > copy_user_page() function, as reported by Michael Ellerman's kisskb > > build bot: > > > > fs/dax.c: error: implicit declaration of function 'copy_user_page' [-Werror=implicit-function-declaration]: => 266:2 > > > > We already have a list of architectures that are known to be incompatible, > > but the list is missing ARC and SH at the moment. Further, blackfin and > > c6x also lack support for this function, but are already excluded because > > they do not support MMU-based kernels. > > I've got a short list of patches for DAX; I'll add this one to the list. > > Have the maintainers of these architectures been notified that they're > missing a core piece of kernel functionality? > Guess there a philosophical difference in opinion if the architecture code should (have to) provide copy_user_page() or not outside the architecture code itself. After all, fs/dax.c _is_ the only user of this function outside the architecture code. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
