76 extern void uffd_wp_range(struct mm_struct *dst_mm, struct vm_area_struct *vma,
80 static inline bool is_mergeable_vm_userfaultfd_ctx(struct vm_area_struct *vma,  in is_mergeable_vm_userfaultfd_ctx()  argument
83 	return vma->vm_userfaultfd_ctx.ctx == vm_ctx.ctx;  in is_mergeable_vm_userfaultfd_ctx()
97 static inline bool uffd_disable_huge_pmd_share(struct vm_area_struct *vma)  in uffd_disable_huge_pmd_share()  argument
99 	return vma->vm_flags & (VM_UFFD_WP | VM_UFFD_MINOR);  in uffd_disable_huge_pmd_share()
109 static inline bool uffd_disable_fault_around(struct vm_area_struct *vma)  in uffd_disable_fault_around()  argument
111 	return vma->vm_flags & (VM_UFFD_WP | VM_UFFD_MINOR);  in uffd_disable_fault_around()
114 static inline bool userfaultfd_missing(struct vm_area_struct *vma)  in userfaultfd_missing()  argument
116 	return vma->vm_flags & VM_UFFD_MISSING;  in userfaultfd_missing()
119 static inline bool userfaultfd_wp(struct vm_area_struct *vma)  in userfaultfd_wp()  argument
121 	return vma->vm_flags & VM_UFFD_WP;  in userfaultfd_wp()
124 static inline bool userfaultfd_minor(struct vm_area_struct *vma)  in userfaultfd_minor()  argument
126 	return vma->vm_flags & VM_UFFD_MINOR;  in userfaultfd_minor()
129 static inline bool userfaultfd_pte_wp(struct vm_area_struct *vma,  in userfaultfd_pte_wp()  argument
132 	return userfaultfd_wp(vma) && pte_uffd_wp(pte);  in userfaultfd_pte_wp()
135 static inline bool userfaultfd_huge_pmd_wp(struct vm_area_struct *vma,  in userfaultfd_huge_pmd_wp()  argument
138 	return userfaultfd_wp(vma) && pmd_uffd_wp(pmd);  in userfaultfd_huge_pmd_wp()
141 static inline bool userfaultfd_armed(struct vm_area_struct *vma)  in userfaultfd_armed()  argument
143 	return vma->vm_flags & __VM_UFFD_FLAGS;  in userfaultfd_armed()
146 static inline bool vma_can_userfault(struct vm_area_struct *vma,  in vma_can_userfault()  argument
150 	    (!is_vm_hugetlb_page(vma) && !vma_is_shmem(vma)))  in vma_can_userfault()
158 	if ((vm_flags & VM_UFFD_WP) && !vma_is_anonymous(vma))  in vma_can_userfault()
161 	return vma_is_anonymous(vma) || is_vm_hugetlb_page(vma) ||  in vma_can_userfault()
162 	    vma_is_shmem(vma);  in vma_can_userfault()
174 extern bool userfaultfd_remove(struct vm_area_struct *vma,
192 static inline bool is_mergeable_vm_userfaultfd_ctx(struct vm_area_struct *vma,  in is_mergeable_vm_userfaultfd_ctx()  argument
198 static inline bool userfaultfd_missing(struct vm_area_struct *vma)  in userfaultfd_missing()  argument
203 static inline bool userfaultfd_wp(struct vm_area_struct *vma)  in userfaultfd_wp()  argument
208 static inline bool userfaultfd_minor(struct vm_area_struct *vma)  in userfaultfd_minor()  argument
213 static inline bool userfaultfd_pte_wp(struct vm_area_struct *vma,  in userfaultfd_pte_wp()  argument
219 static inline bool userfaultfd_huge_pmd_wp(struct vm_area_struct *vma,  in userfaultfd_huge_pmd_wp()  argument
226 static inline bool userfaultfd_armed(struct vm_area_struct *vma)  in userfaultfd_armed()  argument
231 static inline int dup_userfaultfd(struct vm_area_struct *vma,  in dup_userfaultfd()  argument
241 static inline void mremap_userfaultfd_prep(struct vm_area_struct *vma,  in mremap_userfaultfd_prep()  argument
253 static inline bool userfaultfd_remove(struct vm_area_struct *vma,  in userfaultfd_remove()  argument
272 static inline bool uffd_disable_fault_around(struct vm_area_struct *vma)  in uffd_disable_fault_around()  argument