X-Git-Url: https://nv-tegra.nvidia.com/r/gitweb?p=linux-2.6.git;a=blobdiff_plain;f=mm%2Fhuge_memory.c;h=620891f4e54f4ee6543b1cc82bcf3d810804ee7c;hp=7635079328983883e483332be82fda788bfc3add;hb=0af4e98b6b095c74588af04872f83d333c958c32;hpb=f66055ab6fb9731dbfce320c5202ef4441b5d77f

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 76350793289..620891f4e54 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -896,6 +896,22 @@ out:
 	return ret;
 }
 
+int hugepage_madvise(unsigned long *vm_flags)
+{
+	/*
+	 * Be somewhat over-protective like KSM for now!
+	 */
+	if (*vm_flags & (VM_HUGEPAGE | VM_SHARED  | VM_MAYSHARE   |
+			 VM_PFNMAP   | VM_IO      | VM_DONTEXPAND |
+			 VM_RESERVED | VM_HUGETLB | VM_INSERTPAGE |
+			 VM_MIXEDMAP | VM_SAO))
+		return -EINVAL;
+
+	*vm_flags |= VM_HUGEPAGE;
+
+	return 0;
+}
+
 void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd)
 {
 	struct page *page;