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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-10-15 14:51:31 +0200
committerPeter Zijlstra <a.p.zijlstra@chello.nl>2007-10-15 14:51:31 +0200
commitd475fd428ce77aa2a8bc650d230e17663a4f49c3 (patch)
tree19ba4a1b688a758b2e674f792e1d605896419cc8 /fs/inode.c
parent58dfe883d3bc3b4c08c53a7f39e2ca3ec84f089e (diff)
downloadop-kernel-dev-d475fd428ce77aa2a8bc650d230e17663a4f49c3.zip
op-kernel-dev-d475fd428ce77aa2a8bc650d230e17663a4f49c3.tar.gz
lockdep: per filesystem inode lock class
Give each filesystem its own inode lock class. The various filesystems have different locking order wrt the inode locks; esp. the pseudo filesystems differ from the rest. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'fs/inode.c')
-rw-r--r--fs/inode.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 29f5068..bf6adf1 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);
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