Re: [PATCH v10 1/4] cgroups: use bitmask to filter for_each_subsys

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Hi Tejun,

> Hmmmm... You can either convert all masks to ulong (which is fine) or
> do something like the following.
>
> #define for_each_subsys_which(ss_mask, ss, ssid)            \
>     unsigned long __tmp_mask = (ss_mask);                   \
>     for_each_set_bit(ssid, &__tmp_mask, CGROUP_SUBSYS_COUNT)\
>             if ((ss) = group_subsys[ssid] && false)         \
>                     ;                                       \
>              else

I think I'll just do casting and manually make new variables where
required. The above (and similar) doesn't work very well, generates
warnings like crazy and breaks stuff like:

    if (...)
        for_each_subsys_which(...)

--
Aleksa Sarai (cyphar)
www.cyphar.com
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