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    SubjectRe: Fix signalfd interaction with thread-private signals
    On Fri, 2007-06-22 at 15:47 -0700, Linus Torvalds wrote:
    > Quite frankly, it strikes me that if we want to do this, then we shouldn't
    > save the _process_ information at all, we should save the "sighand"
    > instead.
    > So either we save the process info, or we save the sighand, but saving the
    > "group_leader" seems totally bogus. Especially as the group leader can
    > change (by execve()).
    > One thing that strikes me as I look at that function is that the whole
    > signalfd thing doesn't seem to do any reference counting. Ie it looks
    > totally buggy wrt passing the resulting fd off to somebody else, and then
    > exiting in the original process.
    > What did I miss?

    Probably nothing... doesn't look good. What are the lifetime rules of a
    struct sighand tho ?


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