Hi Francois, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-tip/drm-tip] [also build test WARNING on linus/master v6.19-rc4 next-20260109] [cannot apply to drm-misc/drm-misc-next akpm-mm/mm-everything powerpc/topic/ppc-kvm pci/next pci/for-linus akpm-mm/mm-nonmm-unstable brauner-vfs/vfs.all daeinki-drm-exynos/exynos-drm-next drm/drm-next drm-i915/for-linux-next drm-i915/for-linux-next-fixes] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Francois-Dugast/mm-zone_device-Add-order-argument-to-folio_free-callback/20260112-050347 base: https://gitlab.freedesktop.org/drm/tip.git drm-tip patch link: https://lore.kernel.org/r/20260111205820.830410-4-francois.dugast%40intel.com patch subject: [PATCH v4 3/7] fs/dax: Use free_zone_device_folio_prepare() helper config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260112/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) rustc: rustc 1.88.0 (6b00bc388 2025-06-23) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260112/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): >> fs/dax.c:384:6: warning: unused variable 'order' [-Wunused-variable] 384 | int order, i; | ^~~~~ >> fs/dax.c:384:13: warning: unused variable 'i' [-Wunused-variable] 384 | int order, i; | ^ 2 warnings generated. vim +/order +384 fs/dax.c 38607c62b34b46 Alistair Popple 2025-02-28 380 38607c62b34b46 Alistair Popple 2025-02-28 381 static inline unsigned long dax_folio_put(struct folio *folio) 6061b69b9a550a Shiyang Ruan 2022-06-03 382 { 38607c62b34b46 Alistair Popple 2025-02-28 383 unsigned long ref; 38607c62b34b46 Alistair Popple 2025-02-28 @384 int order, i; 38607c62b34b46 Alistair Popple 2025-02-28 385 38607c62b34b46 Alistair Popple 2025-02-28 386 if (!dax_folio_is_shared(folio)) 38607c62b34b46 Alistair Popple 2025-02-28 387 ref = 0; 38607c62b34b46 Alistair Popple 2025-02-28 388 else 38607c62b34b46 Alistair Popple 2025-02-28 389 ref = --folio->share; 38607c62b34b46 Alistair Popple 2025-02-28 390 38607c62b34b46 Alistair Popple 2025-02-28 391 if (ref) 38607c62b34b46 Alistair Popple 2025-02-28 392 return ref; 38607c62b34b46 Alistair Popple 2025-02-28 393 ae869c69ed0719 Matthew Brost 2026-01-11 394 free_zone_device_folio_prepare(folio); 16900426586032 Shiyang Ruan 2022-12-01 395 38607c62b34b46 Alistair Popple 2025-02-28 396 return ref; 16900426586032 Shiyang Ruan 2022-12-01 397 } 16900426586032 Shiyang Ruan 2022-12-01 398 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
