hugetlb: ensure hugepage access is denied if hugepages are not supported

[pandora-kernel.git] / fs / hugetlbfs / inode.c

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 0aa424a..ebab116 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -979,6 +979,11 @@ static int __init init_hugetlbfs_fs(void)
        int error;
        struct vfsmount *vfsmount;
 
+       if (!hugepages_supported()) {
+               pr_info("hugetlbfs: disabling because there are no supported hugepage sizes\n");
+               return -ENOTSUPP;
+       }
+
        error = bdi_init(&hugetlbfs_backing_dev_info);
        if (error)
                return error;