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-rw-r--r--include/linux/mm.h85
1 files changed, 58 insertions, 27 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 30138219940e..349f0d9aad22 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1325,6 +1325,8 @@ static inline void get_page(struct page *page)
struct folio *folio = page_folio(page);
if (WARN_ON_ONCE(folio_test_slab(folio)))
return;
+ if (WARN_ON_ONCE(folio_test_large_kmalloc(folio)))
+ return;
folio_get(folio);
}
@@ -1419,7 +1421,7 @@ static inline void put_page(struct page *page)
{
struct folio *folio = page_folio(page);
- if (folio_test_slab(folio))
+ if (folio_test_slab(folio) || folio_test_large_kmalloc(folio))
return;
folio_put(folio);
@@ -1816,7 +1818,24 @@ static inline pmd_t folio_mk_pmd(struct folio *folio, pgprot_t pgprot)
{
return pmd_mkhuge(pfn_pmd(folio_pfn(folio), pgprot));
}
-#endif
+
+#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
+/**
+ * folio_mk_pud - Create a PUD for this folio
+ * @folio: The folio to create a PUD for
+ * @pgprot: The page protection bits to use
+ *
+ * Create a page table entry for the first page of this folio.
+ * This is suitable for passing to set_pud_at().
+ *
+ * Return: A page table entry suitable for mapping this folio.
+ */
+static inline pud_t folio_mk_pud(struct folio *folio, pgprot_t pgprot)
+{
+ return pud_mkhuge(pfn_pud(folio_pfn(folio), pgprot));
+}
+#endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif /* CONFIG_MMU */
static inline bool folio_has_pincount(const struct folio *folio)
@@ -2150,13 +2169,13 @@ static inline int folio_expected_ref_count(const struct folio *folio)
const int order = folio_order(folio);
int ref_count = 0;
- if (WARN_ON_ONCE(folio_test_slab(folio)))
+ if (WARN_ON_ONCE(page_has_type(&folio->page) && !folio_test_hugetlb(folio)))
return 0;
if (folio_test_anon(folio)) {
/* One reference per page from the swapcache. */
ref_count += folio_test_swapcache(folio) << order;
- } else if (!((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS)) {
+ } else {
/* One reference per page from the pagecache. */
ref_count += !!folio->mapping << order;
/* One reference from PG_private. */
@@ -2547,7 +2566,7 @@ extern long change_protection(struct mmu_gather *tlb,
unsigned long end, unsigned long cp_flags);
extern int mprotect_fixup(struct vma_iterator *vmi, struct mmu_gather *tlb,
struct vm_area_struct *vma, struct vm_area_struct **pprev,
- unsigned long start, unsigned long end, unsigned long newflags);
+ unsigned long start, unsigned long end, vm_flags_t newflags);
/*
* doesn't attempt to fault and will return short.
@@ -2692,13 +2711,6 @@ static inline pud_t pud_mkspecial(pud_t pud)
}
#endif /* CONFIG_ARCH_SUPPORTS_PUD_PFNMAP */
-#ifndef CONFIG_ARCH_HAS_PTE_DEVMAP
-static inline int pte_devmap(pte_t pte)
-{
- return 0;
-}
-#endif
-
extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
spinlock_t **ptl);
static inline pte_t *get_locked_pte(struct mm_struct *mm, unsigned long addr,
@@ -3311,9 +3323,9 @@ extern void vm_stat_account(struct mm_struct *, vm_flags_t, long npages);
extern bool vma_is_special_mapping(const struct vm_area_struct *vma,
const struct vm_special_mapping *sm);
-extern struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
+struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
unsigned long addr, unsigned long len,
- unsigned long flags,
+ vm_flags_t vm_flags,
const struct vm_special_mapping *spec);
unsigned long randomize_stack_top(unsigned long stack_top);
@@ -3477,10 +3489,10 @@ static inline bool range_in_vma(struct vm_area_struct *vma,
}
#ifdef CONFIG_MMU
-pgprot_t vm_get_page_prot(unsigned long vm_flags);
+pgprot_t vm_get_page_prot(vm_flags_t vm_flags);
void vma_set_page_prot(struct vm_area_struct *vma);
#else
-static inline pgprot_t vm_get_page_prot(unsigned long vm_flags)
+static inline pgprot_t vm_get_page_prot(vm_flags_t vm_flags)
{
return __pgprot(0);
}
@@ -3517,9 +3529,9 @@ vm_fault_t vmf_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
vm_fault_t vmf_insert_pfn_prot(struct vm_area_struct *vma, unsigned long addr,
unsigned long pfn, pgprot_t pgprot);
vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
- pfn_t pfn);
+ unsigned long pfn);
vm_fault_t vmf_insert_mixed_mkwrite(struct vm_area_struct *vma,
- unsigned long addr, pfn_t pfn);
+ unsigned long addr, unsigned long pfn);
int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start, unsigned long len);
static inline vm_fault_t vmf_insert_page(struct vm_area_struct *vma,
@@ -4048,14 +4060,14 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping,
#endif
#ifdef CONFIG_ANON_VMA_NAME
-int madvise_set_anon_name(struct mm_struct *mm, unsigned long start,
- unsigned long len_in,
- struct anon_vma_name *anon_name);
+int set_anon_vma_name(unsigned long addr, unsigned long size,
+ const char __user *uname);
#else
-static inline int
-madvise_set_anon_name(struct mm_struct *mm, unsigned long start,
- unsigned long len_in, struct anon_vma_name *anon_name) {
- return 0;
+static inline
+int set_anon_vma_name(unsigned long addr, unsigned long size,
+ const char __user *uname)
+{
+ return -EINVAL;
}
#endif
@@ -4177,15 +4189,34 @@ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status);
#define PP_MAGIC_MASK ~(PP_DMA_INDEX_MASK | 0x3UL)
#ifdef CONFIG_PAGE_POOL
-static inline bool page_pool_page_is_pp(struct page *page)
+static inline bool page_pool_page_is_pp(const struct page *page)
{
return (page->pp_magic & PP_MAGIC_MASK) == PP_SIGNATURE;
}
#else
-static inline bool page_pool_page_is_pp(struct page *page)
+static inline bool page_pool_page_is_pp(const struct page *page)
{
return false;
}
#endif
+#define PAGE_SNAPSHOT_FAITHFUL (1 << 0)
+#define PAGE_SNAPSHOT_PG_BUDDY (1 << 1)
+#define PAGE_SNAPSHOT_PG_IDLE (1 << 2)
+
+struct page_snapshot {
+ struct folio folio_snapshot;
+ struct page page_snapshot;
+ unsigned long pfn;
+ unsigned long idx;
+ unsigned long flags;
+};
+
+static inline bool snapshot_page_is_faithful(const struct page_snapshot *ps)
+{
+ return ps->flags & PAGE_SNAPSHOT_FAITHFUL;
+}
+
+void snapshot_page(struct page_snapshot *ps, const struct page *page);
+
#endif /* _LINUX_MM_H */
generated by cgit (git 2.34.1) at 2025-08-01 08:14:46 +0000