btrfs: Fix compile error when CONFIG_SECURITY is not set.

Fix the following compile error when CONFIG_SECURITY is not set:

error: 'struct security_mnt_opts' has no member named 'num_mnt_opts'

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 22502848c27f..a2b97ef10317 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1248,6 +1248,7 @@ static int setup_security_options(struct btrfs_fs_info *fs_info,
         if (ret)
                 return ret;
 
+#ifdef CONFIG_SECURITY
         if (!fs_info->security_opts.num_mnt_opts) {
                 /* first time security setup, copy sec_opts to fs_info */
                 memcpy(&fs_info->security_opts, sec_opts, sizeof(*sec_opts));
@@ -1260,6 +1261,7 @@ static int setup_security_options(struct btrfs_fs_info *fs_info,
                  */
                 security_free_mnt_opts(sec_opts);
         }
+#endif
         return ret;
 }