xfs: inode lockdep annotations broke non-lockdep build

Fix CONFIG_LOCKDEP=n build, because asserts I put in to ensure we
aren't overrunning lockdep subclasses in commit 0952c81 ("xfs:
clean up inode lockdep annotations") use a define that doesn't
exist when CONFIG_LOCKDEP=n

Only check the subclass limits when lockdep is actually enabled.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 6579266..aa00ccc 100644 (file)
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -362,6 +362,17 @@ int xfs_lots_retries;
 int xfs_lock_delays;
 #endif
 
+#ifdef CONFIG_LOCKDEP
+static bool
+xfs_lockdep_subclass_ok(
+       int subclass)
+{
+       return subclass < MAX_LOCKDEP_SUBCLASSES;
+}
+#else
+#define xfs_lockdep_subclass_ok(subclass)      (true)
+#endif
+
 /*
  * Bump the subclass so xfs_lock_inodes() acquires each lock with a different
  * value. This can be called for any type of inode lock combination, including
@@ -375,11 +386,12 @@ xfs_lock_inumorder(int lock_mode, int subclass)
 
        ASSERT(!(lock_mode & (XFS_ILOCK_PARENT | XFS_ILOCK_RTBITMAP |
                              XFS_ILOCK_RTSUM)));
+       ASSERT(xfs_lockdep_subclass_ok(subclass));
 
        if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) {
                ASSERT(subclass <= XFS_IOLOCK_MAX_SUBCLASS);
-               ASSERT(subclass + XFS_IOLOCK_PARENT_VAL <
-                                               MAX_LOCKDEP_SUBCLASSES);
+               ASSERT(xfs_lockdep_subclass_ok(subclass +
+                                               XFS_IOLOCK_PARENT_VAL));
                class += subclass << XFS_IOLOCK_SHIFT;
                if (lock_mode & XFS_IOLOCK_PARENT)
                        class += XFS_IOLOCK_PARENT_VAL << XFS_IOLOCK_SHIFT;