ocfs2: Add lockdep annotations

[linux-2.6-block.git] / fs / ocfs2 / sysfile.c

diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c
index ab713ebdd5468222899654f706c4b80955a9bfe8..6f53f5e7256a6999cc378251507610b29d332d12 100644 (file)
--- a/fs/ocfs2/sysfile.c
+++ b/fs/ocfs2/sysfile.c
@@ -50,6 +50,8 @@ static inline int is_in_system_inode_array(struct ocfs2_super *osb,
                                           int type,
                                           u32 slot);
 
+static struct lock_class_key ocfs2_sysfile_cluster_lock_key[NUM_SYSTEM_INODES];
+
 static inline int is_global_system_inode(int type)
 {
        return type >= OCFS2_FIRST_ONLINE_SYSTEM_INODE &&
@@ -118,6 +120,21 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
                inode = NULL;
                goto bail;
        }
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+       if (type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
+           type == LOCAL_GROUP_QUOTA_SYSTEM_INODE ||
+           type == JOURNAL_SYSTEM_INODE) {
+               /* Ignore inode lock on these inodes as the lock does not
+                * really belong to any process and lockdep cannot handle
+                * that */
+               OCFS2_I(inode)->ip_inode_lockres.l_lockdep_map.key = NULL;
+       } else {
+               lockdep_init_map(&OCFS2_I(inode)->ip_inode_lockres.
+                                                               l_lockdep_map,
+                                ocfs2_system_inodes[type].si_name,
+                                &ocfs2_sysfile_cluster_lock_key[type], 0);
+       }
+#endif
 bail:
 
        return inode;