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

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / hugetlbfs / inode.c

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index d19b30a..a4a8ed5 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1017,6 +1017,11 @@ static int __init init_hugetlbfs_fs(void)
        int error;
        int i;
 
+       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;