* This function should be implemented when the writeback function
* will be implemented.
*/
+ struct the_nilfs *nilfs;
struct inode *inode = file->f_mapping->host;
int err;
return err;
mutex_lock(&inode->i_mutex);
- if (!nilfs_inode_dirty(inode)) {
- mutex_unlock(&inode->i_mutex);
- return 0;
+ if (nilfs_inode_dirty(inode)) {
+ if (datasync)
+ err = nilfs_construct_dsync_segment(inode->i_sb, inode,
+ 0, LLONG_MAX);
+ else
+ err = nilfs_construct_segment(inode->i_sb);
}
-
- if (datasync)
- err = nilfs_construct_dsync_segment(inode->i_sb, inode, 0,
- LLONG_MAX);
- else
- err = nilfs_construct_segment(inode->i_sb);
-
mutex_unlock(&inode->i_mutex);
+
+ nilfs = inode->i_sb->s_fs_info;
+ if (!err && nilfs_test_opt(nilfs, BARRIER)) {
+ err = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+ if (err != -EIO)
+ err = 0;
+ }
return err;
}