diff options
| -rw-r--r-- | fs/kernfs/mount.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index b9b16e97bff1..4a0ff08d589c 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -209,6 +209,7 @@ struct dentry *kernfs_node_dentry(struct kernfs_node *kn, { struct dentry *dentry; struct kernfs_node *knparent; + struct kernfs_root *root; BUG_ON(sb->s_op != &kernfs_sops); @@ -218,6 +219,9 @@ struct dentry *kernfs_node_dentry(struct kernfs_node *kn, if (!kn->parent) return dentry; + root = kernfs_root(kn); + guard(rwsem_read)(&root->kernfs_rwsem); + knparent = find_next_ancestor(kn, NULL); if (WARN_ON(!knparent)) { dput(dentry); |