diff options
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/fs/inode.c b/fs/inode.c index 29f5068f819..f97de0aeb3b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -142,6 +142,15 @@ static struct inode *alloc_inode(struct super_block *sb) return NULL; } + spin_lock_init(&inode->i_lock); + lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key); + + mutex_init(&inode->i_mutex); + lockdep_set_class(&inode->i_mutex, &sb->s_type->i_mutex_key); + + init_rwsem(&inode->i_alloc_sem); + lockdep_set_class(&inode->i_alloc_sem, &sb->s_type->i_alloc_sem_key); + mapping->a_ops = &empty_aops; mapping->host = inode; mapping->flags = 0; @@ -190,8 +199,6 @@ void inode_init_once(struct inode *inode) INIT_HLIST_NODE(&inode->i_hash); INIT_LIST_HEAD(&inode->i_dentry); INIT_LIST_HEAD(&inode->i_devices); - mutex_init(&inode->i_mutex); - init_rwsem(&inode->i_alloc_sem); INIT_RADIX_TREE(&inode->i_data.page_tree, GFP_ATOMIC); rwlock_init(&inode->i_data.tree_lock); spin_lock_init(&inode->i_data.i_mmap_lock); @@ -199,7 +206,6 @@ void inode_init_once(struct inode *inode) spin_lock_init(&inode->i_data.private_lock); INIT_RAW_PRIO_TREE_ROOT(&inode->i_data.i_mmap); INIT_LIST_HEAD(&inode->i_data.i_mmap_nonlinear); - spin_lock_init(&inode->i_lock); i_size_ordered_init(inode); #ifdef CONFIG_INOTIFY INIT_LIST_HEAD(&inode->inotify_watches); @@ -561,6 +567,18 @@ EXPORT_SYMBOL(new_inode); void unlock_new_inode(struct inode *inode) { +#ifdef CONFIG_DEBUG_LOCK_ALLOC + struct file_system_type *type = inode->i_sb->s_type; + /* + * ensure nobody is actually holding i_mutex + */ + mutex_destroy(&inode->i_mutex); + mutex_init(&inode->i_mutex); + if (inode->i_mode & S_IFDIR) + lockdep_set_class(&inode->i_mutex, &type->i_mutex_dir_key); + else + lockdep_set_class(&inode->i_mutex, &type->i_mutex_key); +#endif /* * This is special! We do not need the spinlock * when clearing I_LOCK, because we're guaranteed |