David Crossley wrote:

Issues should probably be described at our Jira.
When closing it, declare the svn revision number
that fixed it. Also in the svn commit, show the
Jira issue number.

A little time saving hint:

There is no need to put the revision number in Jira as long as you put the JIRA number in the commit message (which you should do anyway). Jira will provide links directly to the viewsvn pages for that particular commit (including revision number).

Ross