#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
-#define fsfilt_up_truncate_sem(inode) up(&EXT3_I(inode)->truncate_sem);
-#define fsfilt_down_truncate_sem(inode) down(&EXT3_I(inode)->truncate_sem);
+# define fsfilt_up_truncate_sem(inode) up(&LDISKFS_I(inode)->truncate_sem);
+# define fsfilt_down_truncate_sem(inode) down(&LDISKFS_I(inode)->truncate_sem);
#else
-#ifdef HAVE_EXT4_LDISKFS
-#define fsfilt_up_truncate_sem(inode) up_write((&EXT4_I(inode)->i_data_sem));
-#define fsfilt_down_truncate_sem(inode) down_write((&EXT4_I(inode)->i_data_sem));
-#else
-#define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex);
-#define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex);
-#endif
+# ifdef HAVE_EXT4_LDISKFS
+# ifdef WALK_SPACE_HAS_DATA_SEM /* We only use it in fsfilt_map_nblocks() for now */
+# define fsfilt_up_truncate_sem(inode) do{ }while(0)
+# define fsfilt_down_truncate_sem(inode) do{ }while(0)
+# else
+# define fsfilt_up_truncate_sem(inode) up_write((&EXT4_I(inode)->i_data_sem))
+# define fsfilt_down_truncate_sem(inode) down_write((&EXT4_I(inode)->i_data_sem))
+# endif
+# else
+# define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex)
+# define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex)
+# endif
#endif
#ifndef EXT_ASSERT