Initialize smackfs as a pseudo filesystem. This raises SB_I_PSEUDO and
also SB_I_NOEXEC and SB_I_NODEV. smackfs never holds executables or
device nodes.

Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Alexander Mikhalitsyn <alex@amutable.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---
 security/smack/smackfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index a72bc7fabea99..4a56bbeaeca37 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -25,6 +25,7 @@
 #include <linux/magic.h>
 #include <linux/mount.h>
 #include <linux/fs_context.h>
+#include <linux/pseudo_fs.h>
 #include "smack.h"
 
 #define BEBITS	(sizeof(__be32) * 8)
@@ -2880,6 +2881,7 @@ static const struct fs_context_operations smk_context_ops = {
  */
 static int smk_init_fs_context(struct fs_context *fc)
 {
+	fc_init_pseudo(fc);
 	fc->ops = &smk_context_ops;
 	return 0;
 }

-- 
2.53.0