Hi all, I hit the following compiling error on latest stable tree with linux-3.4.y branch on s390x machine: ---------------- snip --------------- CHK include/linux/version.h CHK include/generated/utsrelease.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h CC mm/memory.o mm/memory.c: In function ‘vm_iomap_memory’: mm/memory.c:2375:2: error: implicit declaration of function ‘io_remap_pfn_range’ [-Werror=implicit-function-declaration] return io_remap_pfn_range(vma, vma->vm_start, pfn, vm_len, vma->vm_page_prot); ^ cc1: some warnings being treated as errors make[1]: *** [mm/memory.o] Error 1 make: *** [mm] Error 2 I checked codes, and find the function 'io_remap_pfn_range' in s390x was introduced by commit cd24834130a since 3.8-rc1, but it didn't be backported to 3.4-stable yet, how to deal with this? -- Thanks, Zhouping -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html