None of the helpers need write access to the PTE. Constifying the param allows for const typesafety.
Signed-off-by: Pedro Falcato <[email protected]> --- include/linux/pgtable.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 8c093c119e5a..dc418553e57a 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -490,7 +490,7 @@ 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); } @@ -739,7 +739,7 @@ static inline void ptep_clear(struct mm_struct *mm, unsigned long addr, * present bit set *unless* it is 'l'. Because get_user_pages_fast() only * operates on present ptes we're safe. */ -static inline pte_t ptep_get_lockless(pte_t *ptep) +static inline pte_t ptep_get_lockless(const pte_t *ptep) { pte_t pte; @@ -777,7 +777,7 @@ static inline pmd_t pmdp_get_lockless(pmd_t *pmdp) * We require that the PTE can be read atomically. */ #ifndef ptep_get_lockless -static inline pte_t ptep_get_lockless(pte_t *ptep) +static inline pte_t ptep_get_lockless(const pte_t *ptep) { return ptep_get(ptep); } -- 2.55.0
