vfs: new d_init method

[cascardo/linux.git] / fs / dcache.c

diff --git a/fs/dcache.c b/fs/dcache.c
index d5beef0..6d60a76 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1569,6 +1569,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
 {
        struct dentry *dentry;
        char *dname;
+       int err;
 
        dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL);
        if (!dentry)
@@ -1627,6 +1628,16 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
        INIT_LIST_HEAD(&dentry->d_child);
        d_set_d_op(dentry, dentry->d_sb->s_d_op);
 
+       if (dentry->d_op && dentry->d_op->d_init) {
+               err = dentry->d_op->d_init(dentry);
+               if (err) {
+                       if (dname_external(dentry))
+                               kfree(external_name(dentry));
+                       kmem_cache_free(dentry_cache, dentry);
+                       return NULL;
+               }
+       }
+
        this_cpu_inc(nr_dentry);
 
        return dentry;