+extern void __d_lookup_done(struct dentry *);
+
+static inline int d_in_lookup(struct dentry *dentry)
+{
+ return dentry->d_flags & DCACHE_PAR_LOOKUP;
+}
+
+static inline void d_lookup_done(struct dentry *dentry)
+{
+ if (unlikely(d_in_lookup(dentry))) {
+ spin_lock(&dentry->d_lock);
+ __d_lookup_done(dentry);
+ spin_unlock(&dentry->d_lock);
+ }
+}
+