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    SubjectRe: [PATCH] EPOLL_CTL_SET operatin for epoll_ctl when using EPOLLONESHOT
    On Thu, 24 Sep 2009, Carlo Marcelo Arenas Belon wrote:

    > Simplify userspace by eliminating the need to track whether a specific
    > filehandle was added to epoll already and only needs to be re-arm
    > after being internally disabled by EPOLLONESHOT.
    >
    > EPOLL_CLT_SET can be used to add or modify a filehandle in epoll
    > using the kernel's internal tracking to apply the right equivalent
    > operation to EPOLL_CTL_ADD or EPOLL_CTL_MOD.

    Applications (except poorly written ones) usually know what's in the
    epoll set and what's not, in their bookkeeping.
    I'm sorry, but I see no use of this code.



    - Davide




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