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    SubjectRe: [PATCH] drivers/block/ub.c: use list_for_each_entry()
     > > If I just see
    > >
    > > for (pos = list_entry((head)->next, typeof(*pos), member),
    > > n = list_entry(pos->, typeof(*pos), member);
    > > &pos->member != (head);
    > > pos = n, n = list_entry(n->, typeof(*n), member))
    > >
    > > then what am I to think?
    > You won't catch me writing this kind of crap, so the question is moot.
    > Seriously, a comma operator? Admit it, you just expanded a marcro from
    > list.h by hand. Real people cannot write like that.

    Of course I admit it, that is a copy of the definition of list_for_each_safe()
    (with just the '/'s removed). But the point is, if you are writing
    something that iterates through a list and deletes entries, you
    basically have to write equivalent code.

    Just think about how many silly bugs you've written in your life when
    (re)implementing linked lists. By using <linux/list.h>, you avoid all
    that, and as a code reviewer that makes my life easier. It's the same
    theory as <linux/kref.h> -- the code is rather trivial (although as
    "git log lib/kref.c" shows, not entirely trivial). But if I see
    someone using struct kref, all I have to check is whether she used it
    correctly. I don't have to worry about whether she screwed up the

    - R.
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      Last update: 2007-05-31 06:31    [W:0.021 / U:169.184 seconds]
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