XFS_ILOCK_PARENT_VAL 371 fs/xfs/xfs_inode.h #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) XFS_ILOCK_PARENT_VAL 375 fs/xfs/xfs_inode.h #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT)