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From: Robert Watson <rwatson@FreeBSD.org>
Date: Mon, 13 Apr 2009 11:54:22 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/kern sys_generic.c
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rwatson     2009-04-13 11:54:22 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/kern             sys_generic.c 
  Log:
  SVN rev 190997 on 2009-04-13 11:54:22Z by rwatson
  
  Merge r190996 from head to stable/7:
  
    When writing out updated pollfd records when returning from
    poll(), only copy out the revents field, not the whole pollfd
    structure.  Otherwise, if the events field is updated
    concurrently by another thread, that update may be lost.
  
    This issue apparently causes problems for the JDK on FreeBSD,
    which expects the Linux behavior of not updating all fields
    (somewhat oddly, Solaris does not implement the required
    behavior, but presumably our adaptation of the JDK is based
    on the Linux port?).
  
    MFC after:      2 weeks
    PR:             kern/130924
    Submitted by:   Kurt Miller <kurt @ intricatesoftware.com>
    Discussed with: kib
  
  Approved by:    re (kib)
  
  Revision   Changes    Path
  1.158.2.2  +22 -1     src/sys/kern/sys_generic.c