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    SubjectRe: [PATCH v5 6/8] tcp buffer limitation: per-cgroup limit
    On 10/05/2011 12:58 PM, Eric Dumazet wrote:
    > Le mercredi 05 octobre 2011 à 12:08 +0400, Glauber Costa a écrit :
    >> On 10/04/2011 04:48 PM, Eric Dumazet wrote:
    >>> 2) Could you add const qualifiers when possible to your pointers ?
    >> Well, I'll go over the patches again and see where I can add them.
    >> Any specific place site you're concerned about?
    > Everywhere its possible :
    > It helps reader to instantly knows if a function is about to change some
    > part of the object or only read it, without reading function body.
    Sure it does.

    So, give me your opinion on this:

    most of the acessors inside struct sock do not modify the pointers,
    but return an address of an element inside it (that can later on be
    modified by the caller.

    I think it is fine for the purpose of clarity, but to avoid warnings we
    end up having to do stuff like this:

    +#define CONSTCG(m) ((struct mem_cgroup *)(m))
    +long *tcp_sysctl_mem(const struct mem_cgroup *memcg)
    + return CONSTCG(memcg)->tcp.tcp_prot_mem;

    Is it acceptable?
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      Last update: 2011-10-06 10:41    [W:0.024 / U:0.072 seconds]
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