[Bugs] [Bug 1666143] New: Several fixes on socket pollin and pollout return value

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1666143

            Bug ID: 1666143
           Summary: Several fixes on socket pollin and pollout return
                    value
           Product: GlusterFS
           Version: mainline
            Status: NEW
         Component: rpc
          Assignee: bugs at gluster.org
          Reporter: zhhuan at gmail.com
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Description of problem:

Found the return value of socket pollin and pollout for rpc message is not
correctly handled. One major problem is socket EAGAIN error will be returned
all the way back to dispatch handler and confuse user with error message like:

[2018-12-29 07:31:41.772310] E [MSGID: 101191]
[event-epoll.c:674:event_dispatch_epoll_worker] 0-epoll: Failed to dispatch
handler


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

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