This probably will not work with backported distribution (fb internal, netflix internal, certain redhat dist.) I am not sure what is the standard way to deal with this.

cc @brendangregg

So far we've gotten away with checking if symbols exist rather than kernel versions. But in this case it's a structure difference. I wonder if there's a symbol change from the same patchset we could use as an indicator?

In any case, this should be commented to say that it's temporary code. "# workaround for the 4.14 change." That way, we can find it in the distant future and delete it when it's no longer needed.

I hadn't though about backported distributions.
I've updated the pull request to use the bio-dev macro as a discriminator to detect the structure difference. That macro was introduced in the same commit as the structure change.

@drzaeus77 Could you relaunch the build? Looks like it failed due to the certificate expiration. Never mind, it started when I commented 😮

LGTM. I think this addressed Brendan's concern.