On Wed, 16 Jun 2021 06:16:55 +0800 kernel test robot <lkp@xxxxxxxxx> wrote: > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > branch HEAD: 19ae1f2bd9c091059f80646604ccef8a1e614f57 Add linux-next specific files for 20210615 > > Error/Warning ids grouped by kconfigs: > > clang_recent_errors > |-- arm64-randconfig-r014-20210615 > | `-- mm-hugetlb.c:warning:no-previous-prototype-for-function-hugetlb_basepage_index > |-- x86_64-randconfig-a011-20210615 > | `-- mm-hugetlb.c:warning:no-previous-prototype-for-function-hugetlb_basepage_index I guess this? Against Hugh's "mm, futex: fix shared futex pgoff on shmem huge page". --- a/include/linux/pagemap.h~mm-futex-fix-shared-futex-pgoff-on-shmem-huge-page-fix +++ a/include/linux/pagemap.h @@ -535,16 +535,16 @@ static inline pgoff_t page_to_index(stru return pgoff; } +extern pgoff_t hugetlb_basepage_index(struct page *page); + /* * Get the offset in PAGE_SIZE (even for hugetlb pages). * (TODO: hugetlb pages should have ->index in PAGE_SIZE) */ static inline pgoff_t page_to_pgoff(struct page *page) { - if (unlikely(PageHuge(page))) { - extern pgoff_t hugetlb_basepage_index(struct page *page); + if (unlikely(PageHuge(page))) return hugetlb_basepage_index(page); - } return page_to_index(page); } _
