hugetlb: use mmu_gather instead of a temporary linked list for accumulating pages

[firefly-linux-kernel-4.4.55.git] / include / linux / hugetlb.h

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 217f52859fa787e4f100cdb9b6880e9f37f3fd5f..0f23c1840c9b0443bd88ed110cff3ea5e95a21bc 100644 (file)
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -7,6 +7,7 @@
 
 struct ctl_table;
 struct user_struct;
+struct mmu_gather;
 
 #ifdef CONFIG_HUGETLB_PAGE
 
@@ -40,9 +41,10 @@ int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
                        struct page **, struct vm_area_struct **,
                        unsigned long *, int *, int, unsigned int flags);
 void unmap_hugepage_range(struct vm_area_struct *,
-                       unsigned long, unsigned long, struct page *);
-void __unmap_hugepage_range(struct vm_area_struct *,
-                       unsigned long, unsigned long, struct page *);
+                         unsigned long, unsigned long, struct page *);
+void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
+                               unsigned long start, unsigned long end,
+                               struct page *ref_page);
 int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
 void hugetlb_report_meminfo(struct seq_file *);
 int hugetlb_report_node_meminfo(int, char *);
@@ -98,7 +100,6 @@ static inline unsigned long hugetlb_total_pages(void)
 #define follow_huge_addr(mm, addr, write)      ERR_PTR(-EINVAL)
 #define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; })
 #define hugetlb_prefault(mapping, vma)         ({ BUG(); 0; })
-#define unmap_hugepage_range(vma, start, end, page)    BUG()
 static inline void hugetlb_report_meminfo(struct seq_file *m)
 {
 }
@@ -112,13 +113,24 @@ static inline void hugetlb_report_meminfo(struct seq_file *m)
 #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
 #define hugetlb_fault(mm, vma, addr, flags)    ({ BUG(); 0; })
 #define huge_pte_offset(mm, address)   0
-#define dequeue_hwpoisoned_huge_page(page)     0
+static inline int dequeue_hwpoisoned_huge_page(struct page *page)
+{
+       return 0;
+}
+
 static inline void copy_huge_page(struct page *dst, struct page *src)
 {
 }
 
 #define hugetlb_change_protection(vma, address, end, newprot)
 
+static inline void __unmap_hugepage_range(struct mmu_gather *tlb,
+                       struct vm_area_struct *vma, unsigned long start,
+                       unsigned long end, struct page *ref_page)
+{
+       BUG();
+}
+
 #endif /* !CONFIG_HUGETLB_PAGE */
 
 #define HUGETLB_ANON_FILE "anon_hugepage"