Mirror MS_KERNMOUNT in ->mnt_flags

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 4 insertions, 1 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index b0b15cc2117c..ffa3843404e0 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1701,7 +1701,7 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path,
 {
         int err;
 
-        mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
+        mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL);
 
         down_write(&namespace_sem);
         /* Something was mounted here while we slept */
diff --git a/fs/super.c b/fs/super.c
index 903896ec7c73..f35ac6022109 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -937,6 +937,9 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
         if (!mnt)
                 goto out;
 
+        if (flags & MS_KERNMOUNT)
+                mnt->mnt_flags = MNT_INTERNAL;
+
         if (data && !(type->fs_flags & FS_BINARY_MOUNTDATA)) {
                 secdata = alloc_secdata();
                 if (!secdata)