lockdep: fixup the inode dir annotation
Peter Zijlstra [Tue, 16 Oct 2007 04:47:54 +0000 (06:47 +0200)]
A slight oversight tripped lockdep debugging code, each lockdep
class should have but a single init site.

Rearange the code to make this true.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/inode.c

index f97de0a..21dab18 100644 (file)
@@ -568,16 +568,16 @@ 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)
+       if (inode->i_mode & S_IFDIR) {
+               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);
                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