From 48bd5dc504cca77b3c3d0df0683c9d29460109d5 Mon Sep 17 00:00:00 2001 From: Anshuman Khandual Date: Fri, 18 Sep 2026 12:19:28 +0530 Subject: [PATCH] mm: constify arguments in default pxdp_get() Generic MM default pxdp_get() helpers fetch the values contained in pgtable entries via READ_ONCE() without modifying them. Just make their arguments explicitly 'const' for some additional protection. Link: https://lore.kernel.org/20260918064928.793742-1-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual Signed-off-by: Andrew Morton Suggested-by: David Hildenbrand Acked-by: David Hildenbrand (Arm) Acked-by: Lorenzo Stoakes (ARM) Reviewed-by: SJ Park Cc: Pedro Falcato --- include/linux/pgtable.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index e3c8ab96941c..780fe849ff8b 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -490,35 +490,35 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma, #endif #ifndef ptep_get -static inline pte_t ptep_get(pte_t *ptep) +static inline pte_t ptep_get(const pte_t *ptep) { return READ_ONCE(*ptep); } #endif #ifndef pmdp_get -static inline pmd_t pmdp_get(pmd_t *pmdp) +static inline pmd_t pmdp_get(const pmd_t *pmdp) { return READ_ONCE(*pmdp); } #endif #ifndef pudp_get -static inline pud_t pudp_get(pud_t *pudp) +static inline pud_t pudp_get(const pud_t *pudp) { return READ_ONCE(*pudp); } #endif #ifndef p4dp_get -static inline p4d_t p4dp_get(p4d_t *p4dp) +static inline p4d_t p4dp_get(const p4d_t *p4dp) { return READ_ONCE(*p4dp); } #endif #ifndef pgdp_get -static inline pgd_t pgdp_get(pgd_t *pgdp) +static inline pgd_t pgdp_get(const pgd_t *pgdp) { return READ_ONCE(*pgdp); }