JFS: Add lockdep annotations
Yeah, it's about time.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h
index 9400558..8f453ef 100644
--- a/fs/jfs/jfs_incore.h
+++ b/fs/jfs/jfs_incore.h
@@ -109,9 +109,11 @@
#define JFS_ACL_NOT_CACHED ((void *)-1)
-#define IREAD_LOCK(ip) down_read(&JFS_IP(ip)->rdwrlock)
+#define IREAD_LOCK(ip, subclass) \
+ down_read_nested(&JFS_IP(ip)->rdwrlock, subclass)
#define IREAD_UNLOCK(ip) up_read(&JFS_IP(ip)->rdwrlock)
-#define IWRITE_LOCK(ip) down_write(&JFS_IP(ip)->rdwrlock)
+#define IWRITE_LOCK(ip, subclass) \
+ down_write_nested(&JFS_IP(ip)->rdwrlock, subclass)
#define IWRITE_UNLOCK(ip) up_write(&JFS_IP(ip)->rdwrlock)
/*
@@ -127,6 +129,29 @@
COMMIT_Synclist, /* metadata pages on group commit synclist */
};
+/*
+ * commit_mutex nesting subclasses:
+ */
+enum commit_mutex_class
+{
+ COMMIT_MUTEX_PARENT,
+ COMMIT_MUTEX_CHILD,
+ COMMIT_MUTEX_SECOND_PARENT, /* Renaming */
+ COMMIT_MUTEX_VICTIM /* Inode being unlinked due to rename */
+};
+
+/*
+ * rdwrlock subclasses:
+ * The dmap inode may be locked while a normal inode or the imap inode are
+ * locked.
+ */
+enum rdwrlock_class
+{
+ RDWRLOCK_NORMAL,
+ RDWRLOCK_IMAP,
+ RDWRLOCK_DMAP
+};
+
#define set_cflag(flag, ip) set_bit(flag, &(JFS_IP(ip)->cflag))
#define clear_cflag(flag, ip) clear_bit(flag, &(JFS_IP(ip)->cflag))
#define test_cflag(flag, ip) test_bit(flag, &(JFS_IP(ip)->cflag))