kernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call
Our caller expects 0 on success, not >0.
This fixes a bug in the patch
cgroup, kernfs: make mountinfo show properly scoped path for cgroup namespaces
where /sys does not show up in mountinfo, breaking criu.
Thanks for catching this, Andrei.
Reported-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 3b78724..3d670a3 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -50,7 +50,8 @@
if (scops && scops->show_path)
return scops->show_path(sf, node, root);
- return seq_dentry(sf, dentry, " \t\n\\");
+ seq_dentry(sf, dentry, " \t\n\\");
+ return 0;
}
const struct super_operations kernfs_sops = {