Merge tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux

[sfrench/cifs-2.6.git] / include / linux / huge_mm.h

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 4663ee96cf5981198de6b6c841faf5331ff67b07..381e872bfde04c86aa68ba6c15f18bcc09e4b0b5 100644 (file)
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -93,7 +93,11 @@ extern bool is_vma_temporary_stack(struct vm_area_struct *vma);
 
 extern unsigned long transparent_hugepage_flags;
 
-static inline bool transparent_hugepage_enabled(struct vm_area_struct *vma)
+/*
+ * to be used on vmas which are known to support THP.
+ * Use transparent_hugepage_enabled otherwise
+ */
+static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
 {
        if (vma->vm_flags & VM_NOHUGEPAGE)
                return false;
@@ -117,6 +121,8 @@ static inline bool transparent_hugepage_enabled(struct vm_area_struct *vma)
        return false;
 }
 
+bool transparent_hugepage_enabled(struct vm_area_struct *vma);
+
 #define transparent_hugepage_use_zero_page()                           \
        (transparent_hugepage_flags &                                   \
         (1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG))
@@ -257,6 +263,11 @@ static inline bool thp_migration_supported(void)
 
 #define hpage_nr_pages(x) 1
 
+static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
+{
+       return false;
+}
+
 static inline bool transparent_hugepage_enabled(struct vm_area_struct *vma)
 {
        return false;