1. iunique does not take the hash lock as of: 3f19b2ab97a97b41 ("vfs, afs, ext4: Make the inode hash table RCU searchable")
2. s_inode_list_lock is no longer taken under the hash lock as of: c918f15420e336a9 ("fs: call inode_sb_list_add() outside of inode hash lock")