{
if (filp->private_data)
btrfs_ioctl_trans_end(filp);
- filemap_flush(inode->i_mapping);
+ /*
+ * ordered_data_close is set by settattr when we are about to truncate
+ * a file from a non-zero size to a zero size. This tries to
+ * flush down new bytes that may have been written if the
+ * application were using truncate to replace a file in place.
+ */
+ if (test_and_clear_bit(BTRFS_INODE_ORDERED_DATA_CLOSE,
+ &BTRFS_I(inode)->runtime_flags))
+ filemap_flush(inode->i_mapping);
return 0;
}