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    SubjectRe: [PATCH 0/23] File descriptor hot-unplug support v2


    On Mon, 8 Jun 2009, Al Viro wrote:
    >
    > Welcome to reality...
    >
    > * bread() is non-interruptible
    > * so's copy_from_user()/copy_to_user()
    > * IO we are stuck upon _might_ be interruptible, but by sending a signal
    > to some other process

    We can probably improve on these, though.

    Like the copy_to/from_user thing. We might well be able to do that whole
    "if it's a fatal signal, return early" thing.

    So in the _general_ case - no, we probably can't fix things. But we could
    likely at least improve in some common cases if we cared.

    Linus


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