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Diffstat (limited to 'include/linux/userfaultfd_k.h')
-rw-r--r--include/linux/userfaultfd_k.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h
index 11b92b047a1e..0468548acebf 100644
--- a/include/linux/userfaultfd_k.h
+++ b/include/linux/userfaultfd_k.h
@@ -52,6 +52,28 @@ static inline bool userfaultfd_armed(struct vm_area_struct *vma)
return vma->vm_flags & (VM_UFFD_MISSING | VM_UFFD_WP);
}
+extern int dup_userfaultfd(struct vm_area_struct *, struct list_head *);
+extern void dup_userfaultfd_complete(struct list_head *);
+
+extern void mremap_userfaultfd_prep(struct vm_area_struct *,
+ struct vm_userfaultfd_ctx *);
+extern void mremap_userfaultfd_complete(struct vm_userfaultfd_ctx *,
+ unsigned long from, unsigned long to,
+ unsigned long len);
+
+extern void userfaultfd_remove(struct vm_area_struct *vma,
+ struct vm_area_struct **prev,
+ unsigned long start,
+ unsigned long end);
+
+extern int userfaultfd_unmap_prep(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct list_head *uf);
+extern void userfaultfd_unmap_complete(struct mm_struct *mm,
+ struct list_head *uf);
+
+extern void userfaultfd_exit(struct mm_struct *mm);
+
#else /* CONFIG_USERFAULTFD */
/* mm helpers */
@@ -76,6 +98,51 @@ static inline bool userfaultfd_armed(struct vm_area_struct *vma)
return false;
}
+static inline int dup_userfaultfd(struct vm_area_struct *vma,
+ struct list_head *l)
+{
+ return 0;
+}
+
+static inline void dup_userfaultfd_complete(struct list_head *l)
+{
+}
+
+static inline void mremap_userfaultfd_prep(struct vm_area_struct *vma,
+ struct vm_userfaultfd_ctx *ctx)
+{
+}
+
+static inline void mremap_userfaultfd_complete(struct vm_userfaultfd_ctx *ctx,
+ unsigned long from,
+ unsigned long to,
+ unsigned long len)
+{
+}
+
+static inline void userfaultfd_remove(struct vm_area_struct *vma,
+ struct vm_area_struct **prev,
+ unsigned long start,
+ unsigned long end)
+{
+}
+
+static inline int userfaultfd_unmap_prep(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct list_head *uf)
+{
+ return 0;
+}
+
+static inline void userfaultfd_unmap_complete(struct mm_struct *mm,
+ struct list_head *uf)
+{
+}
+
+static inline void userfaultfd_exit(struct mm_struct *mm)
+{
+}
+
#endif /* CONFIG_USERFAULTFD */
#endif /* _LINUX_USERFAULTFD_K_H */