1 files changed, 5 insertions, 1 deletions

diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 8f307d914c2e..f46c340727b8 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -26,12 +26,16 @@ static unsigned long page_table_shareable(struct vm_area_struct *svma,
         unsigned long sbase = saddr & PUD_MASK;
         unsigned long s_end = sbase + PUD_SIZE;
 
+        /* Allow segments to share if only one is marked locked */
+        unsigned long vm_flags = vma->vm_flags & ~VM_LOCKED;
+        unsigned long svm_flags = svma->vm_flags & ~VM_LOCKED;
+
         /*
          * match the virtual addresses, permission and the alignment of the
          * page table page.
          */
         if (pmd_index(addr) != pmd_index(saddr) ||
-            vma->vm_flags != svma->vm_flags ||
+            vm_flags != svm_flags ||
             sbase < svma->vm_start || svma->vm_end < s_end)
                 return 0;