If you guys like to dig more about the RHEL issue then Redhat is now providing the wonderful utility to see the code.
Below link, one Destination for most of the answers 🙂
Search for “RED HAT CODE BROWSER” and click on “Go to App”
Use the below link directly.
Select the kernel version then fs (if you want to check the code for any filesystem). All the filesystems are present inside the fs. In below link I am at CIFS readdir code.
It will show you all the struct and functions on left hand side.