linking JIRA to subversion commits

[Ryan McKinley]

How does JIRA know about subversion commits?

For example, SOLR-172
https://issues.apache.org/jira/browse/SOLR-172?page=com.atlassian.jira.plugin.ext.subversion:subversion-commits-tabpanel
but nothing for:
https://issues.apache.org/jira/browse/SOLR-211?page=com.atlassian.jira.plugin.ext.subversion:subversion-commits-tabpanel

or
https://issues.apache.org/jira/browse/SOLR-179?page=com.atlassian.jira.plugin.ext.subversion:subversion-commits-tabpanel

Do i have to do anything to make that show up, or does that eventually 
get automatically synced?


thanks
ryan