mm: migration: fix migration of huge PMD shared pages

[android-x86/kernel.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 493d079..11a5a46 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2187,6 +2187,12 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm,
        return vma;
 }
 
+static inline bool range_in_vma(struct vm_area_struct *vma,
+                               unsigned long start, unsigned long end)
+{
+       return (vma && vma->vm_start <= start && end <= vma->vm_end);
+}
+
 #ifdef CONFIG_MMU
 pgprot_t vm_get_page_prot(unsigned long vm_flags);
 void vma_set_page_prot(struct vm_area_struct *vma);