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Date:      Fri, 6 Aug 2004 22:00:55 +0000 (UTC)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   cvs commit: src/sys/kern kern_descrip.c
Message-ID:  <200408062200.i76M0tBv031509@repoman.freebsd.org>
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rwatson     2004-08-06 22:00:55 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_descrip.c 
  Log:
  Avoid acquiring Giant for some common light-weight or already MPSAFE
  fcntl() operations, including:
  
    F_DUPFD          dup() alias
    F_GETFD          retrieve close-on-exec flag
    F_SETFD          set close-on-exec flag
    F_GETFL          retrieve file descriptor flags
  
  For the remaining fcntl() operations, do acquire Giant, especially
  where we call into fo_ioctl() as a result.  We're not yet ready to
  push Giant into fo_ioctl().  Once we do, this can all become quite a
  bit prettier.
  
  Revision  Changes    Path
  1.240     +31 -2     src/sys/kern/kern_descrip.c

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