1 files changed, 12 insertions, 4 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index a7c67cee5d83..d68631f18df1 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -68,15 +68,19 @@ struct dentry_stat_t dentry_stat = {
         .age_limit = 45,
 };
 
-static void d_callback(struct rcu_head *head)
+static void __d_free(struct dentry *dentry)
 {
-        struct dentry * dentry = container_of(head, struct dentry, d_u.d_rcu);
-
         if (dname_external(dentry))
                 kfree(dentry->d_name.name);
         kmem_cache_free(dentry_cache, dentry); 
 }
 
+static void d_callback(struct rcu_head *head)
+{
+        struct dentry * dentry = container_of(head, struct dentry, d_u.d_rcu);
+        __d_free(dentry);
+}
+
 /*
  * no dcache_lock, please.  The caller must decrement dentry_stat.nr_dentry
  * inside dcache_lock.
@@ -85,7 +89,11 @@ static void d_free(struct dentry *dentry)
 {
         if (dentry->d_op && dentry->d_op->d_release)
                 dentry->d_op->d_release(dentry);
-        call_rcu(&dentry->d_u.d_rcu, d_callback);
+        /* if dentry was never inserted into hash, immediate free is OK */
+        if (dentry->d_hash.pprev == NULL)
+                __d_free(dentry);
+        else
+                call_rcu(&dentry->d_u.d_rcu, d_callback);
 }
 
 /*