Apache graceful restart

We have an issue with apache graceful restart and we are on 2.2.3 version with 1.1 weblogic proxy plugin on linux 5 environment.
We gracefully restart apache at 4 am daily and after couple weeks we see the apache server hung(its not serving any requests). We think the below forum solves our issue but not sure where to find prefork.c file to edit what they say in that forum. Any thoughts??
https://issues.apache.org/bugzilla/show_bug.cgi?id=42829
Apache graceful restart

See original post by bhagat009