mm: split out a new pagewalk.h header from mm.h

[mirror_ubuntu-kernels.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0334ca97c584d8dc85e2038399bf1dfb2432c557..7cf955feb8235d2dec0e52e4ceece12f36dfd955 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1430,54 +1430,8 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long address,
 void unmap_vmas(struct mmu_gather *tlb, struct vm_area_struct *start_vma,
                unsigned long start, unsigned long end);
 
-/**
- * mm_walk - callbacks for walk_page_range
- * @pud_entry: if set, called for each non-empty PUD (2nd-level) entry
- *            this handler should only handle pud_trans_huge() puds.
- *            the pmd_entry or pte_entry callbacks will be used for
- *            regular PUDs.
- * @pmd_entry: if set, called for each non-empty PMD (3rd-level) entry
- *            this handler is required to be able to handle
- *            pmd_trans_huge() pmds.  They may simply choose to
- *            split_huge_page() instead of handling it explicitly.
- * @pte_entry: if set, called for each non-empty PTE (4th-level) entry
- * @pte_hole: if set, called for each hole at all levels
- * @hugetlb_entry: if set, called for each hugetlb entry
- * @test_walk: caller specific callback function to determine whether
- *             we walk over the current vma or not. Returning 0
- *             value means "do page table walk over the current vma,"
- *             and a negative one means "abort current page table walk
- *             right now." 1 means "skip the current vma."
- * @mm:        mm_struct representing the target process of page table walk
- * @vma:       vma currently walked (NULL if walking outside vmas)
- * @private:   private data for callbacks' usage
- *
- * (see the comment on walk_page_range() for more details)
- */
-struct mm_walk {
-       int (*pud_entry)(pud_t *pud, unsigned long addr,
-                        unsigned long next, struct mm_walk *walk);
-       int (*pmd_entry)(pmd_t *pmd, unsigned long addr,
-                        unsigned long next, struct mm_walk *walk);
-       int (*pte_entry)(pte_t *pte, unsigned long addr,
-                        unsigned long next, struct mm_walk *walk);
-       int (*pte_hole)(unsigned long addr, unsigned long next,
-                       struct mm_walk *walk);
-       int (*hugetlb_entry)(pte_t *pte, unsigned long hmask,
-                            unsigned long addr, unsigned long next,
-                            struct mm_walk *walk);
-       int (*test_walk)(unsigned long addr, unsigned long next,
-                       struct mm_walk *walk);
-       struct mm_struct *mm;
-       struct vm_area_struct *vma;
-       void *private;
-};
-
 struct mmu_notifier_range;
 
-int walk_page_range(unsigned long addr, unsigned long end,
-               struct mm_walk *walk);
-int walk_page_vma(struct vm_area_struct *vma, struct mm_walk *walk);
 void free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
                unsigned long end, unsigned long floor, unsigned long ceiling);
 int copy_page_range(struct mm_struct *dst, struct mm_struct *src,