See this discussion: http://mail-archives.apache.org/mod_mbox/httpd-dev/201102.mbox/%3C22810764-4293-4F79-A664-154AB99EA659@jaguNET.com%3E Handling of the busy field using atomic operations was originally patched in bug 48735, but I'm pulling that off into this separate issue, with 48735 tracking the need to clean up the busy field on error paths.
Closing. This really look like a duplicate of bug 46215 *** This bug has been marked as a duplicate of bug 46215 ***