Re: [PATCH v2 9/9] mm: Consolidate common checks in hugetlb_mmap_check_and_align

[kernel test robot]

Hi Oscar,

kernel test robot noticed the following build warnings:

[auto build test WARNING on s390/features]
[also build test WARNING on akpm-mm/mm-everything deller-parisc/for-next linus/master v6.11-rc1 next-20240730]
[cannot apply to powerpc/next powerpc/fixes arnd-asm-generic/master]
[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/Oscar-Salvador/mm-mmap-Teach-generic_get_unmapped_area-_topdown-to-handle-hugetlb-mappings/20240729-171449
base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
patch link: https://lore.kernel.org/r/20240729091018.2152-10-osalvador%40suse.de
patch subject: [PATCH v2 9/9] mm: Consolidate common checks in hugetlb_mmap_check_and_align
config: mips-randconfig-r062-20240729 (https://download.01.org/0day-ci/archive/20240730/202407301708...@intel.com/config)
compiler: mips-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240730/202407301708...@intel.com/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 <l...@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407301708...@intel.com/

All warnings (new ones prefixed by >>):

In file included from include/linux/hugetlb.h:792,
from kernel/fork.c:53:
arch/mips/include/asm/hugetlb.h: In function 'prepare_hugepage_range':
>> arch/mips/include/asm/hugetlb.h:20:24: warning: unused variable 'h' [-Wunused-variable]
20 | struct hstate *h = hstate_file(file);
| ^


vim +/h +20 arch/mips/include/asm/hugetlb.h

50a41ff292fafe David Daney 2009-05-27 13
78d6e4e8ea8700 Alexandre Ghiti 2018-10-26 14 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
50a41ff292fafe David Daney 2009-05-27 15 static inline int prepare_hugepage_range(struct file *file,
50a41ff292fafe David Daney 2009-05-27 16 unsigned long addr,
50a41ff292fafe David Daney 2009-05-27 17 unsigned long len)
50a41ff292fafe David Daney 2009-05-27 18 {
50a41ff292fafe David Daney 2009-05-27 19 unsigned long task_size = STACK_TOP;
50a41ff292fafe David Daney 2009-05-27 @20 struct hstate *h = hstate_file(file);
50a41ff292fafe David Daney 2009-05-27 21
50a41ff292fafe David Daney 2009-05-27 22 if (len > task_size)
50a41ff292fafe David Daney 2009-05-27 23 return -ENOMEM;
50a41ff292fafe David Daney 2009-05-27 24 if (task_size - len < addr)
50a41ff292fafe David Daney 2009-05-27 25 return -EINVAL;
50a41ff292fafe David Daney 2009-05-27 26 return 0;
50a41ff292fafe David Daney 2009-05-27 27 }
50a41ff292fafe David Daney 2009-05-27 28

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