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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>
This commit is contained in:
Serge E. Hallyn 2016-05-12 00:29:45 -05:00 committed by Tejun Heo
parent 4f41fc5962
commit 3cc9b23c81
1 changed files with 2 additions and 1 deletions
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3
fs/kernfs/mount.c
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@ -50,7 +50,8 @@ static int kernfs_sop_show_path(struct seq_file *sf, struct dentry *dentry)
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 = {