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    SubjectRe: [PATCH 00/20] vm deadlock avoidance for NFS, NBD and iSCSI (take 7)
    On 9/12/06, Linus Torvalds <torvalds@osdl.org> wrote:
    >
    >
    > On Tue, 12 Sep 2006, Peter Zijlstra wrote:
    > >
    > > Linus, when I mentioned swap over network to you in Ottawa, you said it was
    > > a valid use case, that people actually do and want this. Can you agree with
    > > the approach taken in these patches?
    >
    > Well, in all honesty, I don't think I really said "valid", but that I said
    > that some crazy people want to do it, and that we should try to allow them
    > their foibles.
    >
    > So I'd be nervous to do any _guarantees_. I think that good VM policies
    > should make it be something that works in general (the dirty mapping
    > limits in particular), but I'd be a bit nervous about anybody taking it
    > _too_ seriously. Crazy people are still crazy, they just might be right
    > under certain reasonably-well-controlled circumstances.

    (oops, forgot to cc: the list)

    Personally, I'm a little unhappy with the added complexity here, I'm
    not convinced that this extra feature is worth it. In particular,
    adding to the address_space_operations, the block_device_operations,
    and creating a new swap index/offset interface just for this seems
    questionable. I feel like interface bloat should be reserved for
    features that have widespread use and benefit.

    Not that I'm opposed to this feature, just that I think this patch is
    too invasive interface-wise.

    NATE
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