Re: [PATCH 1/2] sysctl: add overflow detection to proc_get_long()

[Alexey Dobriyan]

> > Yecchh...  First of all, the cast back to unsigned long long is completely
> > pointless.  What's more,
> 
> Sorry, seriously asking: why?

In C everything is casted to the same type before doing an operation,
in this case comparison

> This was meant to handle the case where
> sizeof(unsigned long long) != sizeof(unsigned long) and I just looked at
> _kstrtoul() which does the same:

Second cast is unnecessary. I don't remember why I did 2 casts.