From: Mike Rapoport <r...@linux.ibm.com> Commit 1355c31eeb7e ("asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()") converted parisc to use generic version of pmd_alloc_one() but it missed the fact that parisc uses order-1 pages for PMD.
Restore the original version of pmd_alloc_one() for parisc, just use GFP_PGTABLE_KERNEL that implies __GFP_ZERO instead of GFP_KERNEL and memset. Fixes: 1355c31eeb7e ("asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()") Repoerted-by: Meelis Roos <mr...@linux.ee> Signed-off-by: Mike Rapoport <r...@linux.ibm.com> Tested-by: Meelis Roos <mr...@linux.ee> Link: https://lkml.kernel.org/r/9f2b5ebd-e4a4-0fa1-6cd3-4b9f6892d...@linux.ee --- Hi, I've trimmed the 'cc list relatively to the bug report and added parisc maintainers. arch/parisc/include/asm/pgalloc.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h index cc7ecc2ef55d..a6482b2ce0ea 100644 --- a/arch/parisc/include/asm/pgalloc.h +++ b/arch/parisc/include/asm/pgalloc.h @@ -10,6 +10,7 @@ #include <asm/cache.h> +#define __HAVE_ARCH_PMD_ALLOC_ONE #define __HAVE_ARCH_PMD_FREE #define __HAVE_ARCH_PGD_FREE #include <asm-generic/pgalloc.h> @@ -67,6 +68,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT))); } +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) +{ + return (pmd_t *)__get_free_pages(GFP_PGTABLE_KERNEL, PMD_ORDER); +} + static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) { if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED) { -- 2.26.2