+int insert_inode_locked(struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+ ino_t ino = inode->i_ino;
+ struct hlist_head *head = inode_hashtable + hash(sb, ino);
+
+ inode->i_state |= I_NEW;
+ while (1) {
+ struct hlist_node *node;
+ struct inode *old = NULL;
+ spin_lock(&inode_lock);
+ hlist_for_each_entry(old, node, head, i_hash) {
+ if (old->i_ino != ino)
+ continue;
+ if (old->i_sb != sb)
+ continue;
+ if (old->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
+ continue;
+ break;
+ }
+ if (likely(!node)) {
+ hlist_add_head(&inode->i_hash, head);
+ spin_unlock(&inode_lock);
+ return 0;
+ }
+ __iget(old);
+ spin_unlock(&inode_lock);
+ wait_on_inode(old);
+ if (unlikely(!hlist_unhashed(&old->i_hash))) {
+ iput(old);
+ return -EBUSY;
+ }
+ iput(old);
+ }
+}
+EXPORT_SYMBOL(insert_inode_locked);
+
+int insert_inode_locked4(struct inode *inode, unsigned long hashval,
+ int (*test)(struct inode *, void *), void *data)
+{
+ struct super_block *sb = inode->i_sb;
+ struct hlist_head *head = inode_hashtable + hash(sb, hashval);
+
+ inode->i_state |= I_NEW;
+
+ while (1) {
+ struct hlist_node *node;
+ struct inode *old = NULL;
+
+ spin_lock(&inode_lock);
+ hlist_for_each_entry(old, node, head, i_hash) {
+ if (old->i_sb != sb)
+ continue;
+ if (!test(old, data))
+ continue;
+ if (old->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
+ continue;
+ break;
+ }
+ if (likely(!node)) {
+ hlist_add_head(&inode->i_hash, head);
+ spin_unlock(&inode_lock);
+ return 0;
+ }
+ __iget(old);
+ spin_unlock(&inode_lock);
+ wait_on_inode(old);
+ if (unlikely(!hlist_unhashed(&old->i_hash))) {
+ iput(old);
+ return -EBUSY;
+ }
+ iput(old);
+ }
+}
+EXPORT_SYMBOL(insert_inode_locked4);
+