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Diffstat (limited to 'include/linux/huge_mm.h')
-rw-r--r--include/linux/huge_mm.h52
1 files changed, 29 insertions, 23 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 2f190c90192d..7748489fde1b 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -37,8 +37,10 @@ int change_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
pmd_t *pmd, unsigned long addr, pgprot_t newprot,
unsigned long cp_flags);
-vm_fault_t vmf_insert_pfn_pmd(struct vm_fault *vmf, pfn_t pfn, bool write);
-vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, pfn_t pfn, bool write);
+vm_fault_t vmf_insert_pfn_pmd(struct vm_fault *vmf, unsigned long pfn,
+ bool write);
+vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, unsigned long pfn,
+ bool write);
vm_fault_t vmf_insert_folio_pmd(struct vm_fault *vmf, struct folio *folio,
bool write);
vm_fault_t vmf_insert_folio_pud(struct vm_fault *vmf, struct folio *folio,
@@ -261,7 +263,7 @@ static inline unsigned long thp_vma_suitable_orders(struct vm_area_struct *vma,
}
unsigned long __thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags,
+ vm_flags_t vm_flags,
unsigned long tva_flags,
unsigned long orders);
@@ -282,7 +284,7 @@ unsigned long __thp_vma_allowable_orders(struct vm_area_struct *vma,
*/
static inline
unsigned long thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags,
+ vm_flags_t vm_flags,
unsigned long tva_flags,
unsigned long orders)
{
@@ -317,7 +319,7 @@ struct thpsize {
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG))
static inline bool vma_thp_disabled(struct vm_area_struct *vma,
- unsigned long vm_flags)
+ vm_flags_t vm_flags)
{
/*
* Explicitly disabled through madvise or prctl, or some
@@ -400,8 +402,7 @@ void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
#define split_huge_pmd(__vma, __pmd, __address) \
do { \
pmd_t *____pmd = (__pmd); \
- if (is_swap_pmd(*____pmd) || pmd_trans_huge(*____pmd) \
- || pmd_devmap(*____pmd)) \
+ if (is_swap_pmd(*____pmd) || pmd_trans_huge(*____pmd)) \
__split_huge_pmd(__vma, __pmd, __address, \
false); \
} while (0)
@@ -426,16 +427,14 @@ change_huge_pud(struct mmu_gather *tlb, struct vm_area_struct *vma,
#define split_huge_pud(__vma, __pud, __address) \
do { \
pud_t *____pud = (__pud); \
- if (pud_trans_huge(*____pud) \
- || pud_devmap(*____pud)) \
+ if (pud_trans_huge(*____pud)) \
__split_huge_pud(__vma, __pud, __address); \
} while (0)
-int hugepage_madvise(struct vm_area_struct *vma, unsigned long *vm_flags,
+int hugepage_madvise(struct vm_area_struct *vma, vm_flags_t *vm_flags,
int advice);
-int madvise_collapse(struct vm_area_struct *vma,
- struct vm_area_struct **prev,
- unsigned long start, unsigned long end);
+int madvise_collapse(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end, bool *lock_dropped);
void vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long start,
unsigned long end, struct vm_area_struct *next);
spinlock_t *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma);
@@ -450,7 +449,7 @@ static inline int is_swap_pmd(pmd_t pmd)
static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
struct vm_area_struct *vma)
{
- if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd))
+ if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd))
return __pmd_trans_huge_lock(pmd, vma);
else
return NULL;
@@ -458,7 +457,7 @@ static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
static inline spinlock_t *pud_trans_huge_lock(pud_t *pud,
struct vm_area_struct *vma)
{
- if (pud_trans_huge(*pud) || pud_devmap(*pud))
+ if (pud_trans_huge(*pud))
return __pud_trans_huge_lock(pud, vma);
else
return NULL;
@@ -473,9 +472,6 @@ static inline bool folio_test_pmd_mappable(struct folio *folio)
return folio_order(folio) >= HPAGE_PMD_ORDER;
}
-struct page *follow_devmap_pmd(struct vm_area_struct *vma, unsigned long addr,
- pmd_t *pmd, int flags, struct dev_pagemap **pgmap);
-
vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf);
extern struct folio *huge_zero_folio;
@@ -486,9 +482,14 @@ static inline bool is_huge_zero_folio(const struct folio *folio)
return READ_ONCE(huge_zero_folio) == folio;
}
+static inline bool is_huge_zero_pfn(unsigned long pfn)
+{
+ return READ_ONCE(huge_zero_pfn) == (pfn & ~(HPAGE_PMD_NR - 1));
+}
+
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
- return pmd_present(pmd) && READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd);
+ return pmd_present(pmd) && is_huge_zero_pfn(pmd_pfn(pmd));
}
struct folio *mm_get_huge_zero_folio(struct mm_struct *mm);
@@ -524,7 +525,7 @@ static inline unsigned long thp_vma_suitable_orders(struct vm_area_struct *vma,
}
static inline unsigned long thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags,
+ vm_flags_t vm_flags,
unsigned long tva_flags,
unsigned long orders)
{
@@ -593,14 +594,14 @@ static inline bool unmap_huge_pmd_locked(struct vm_area_struct *vma,
do { } while (0)
static inline int hugepage_madvise(struct vm_area_struct *vma,
- unsigned long *vm_flags, int advice)
+ vm_flags_t *vm_flags, int advice)
{
return -EINVAL;
}
static inline int madvise_collapse(struct vm_area_struct *vma,
- struct vm_area_struct **prev,
- unsigned long start, unsigned long end)
+ unsigned long start,
+ unsigned long end, bool *lock_dropped)
{
return -EINVAL;
}
@@ -636,6 +637,11 @@ static inline bool is_huge_zero_folio(const struct folio *folio)
return false;
}
+static inline bool is_huge_zero_pfn(unsigned long pfn)
+{
+ return false;
+}
+
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
return false;
generated by cgit (git 2.34.1) at 2025-08-02 01:33:12 +0000