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    SubjectRe: tcp_recvmsg() in 2.4.4

    Eric Barton writes:
    > When it get to if(sk->state == TCP_CLOSE), surely sk->done has already been
    > tested (and the socket is locked), so -ENOTCONN could be returned
    > immediately.

    We sleep and drop the lock during these loops, so we need to retest
    this each time we wake back up.

    > Actually I'd really appreciate it if someone could explain the order of
    > tests for sk->done, sk->err, sk->shutdown and sk->state...

    Most of the error test ordering is specified by POSIX somewhere.

    Alan would know better.

    David S. Miller
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