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Date: Mon, 31 Jul 1995 00:04:13 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199507301404.AAA09866@godzilla.zeta.org.au>
To: CVS-commiters@freefall.cdrom.com, bde@freefall.cdrom.com,
        cvs-sys@freefall.cdrom.com
Subject: Re: cvs commit: src/sys/kern tty.c
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>bde         95/07/30 06:52:57

>  Modified:    sys/kern  tty.c
>  Log:
>  Don't swap the queue headers to implement concatenation of the
>  queues for TIOCSETA[W].  Swapping an even number of times broke
>  the queue resource limits.  This would have broken CRTSCTS flow
>  control if the clist slush list was used up.
>  
>  Don'concatenate the queues for TIOCSETA[W] if one of the queues
>  has a resource limit of 0.  Concatenation would cause a panic if
>  one of the queues is nonempty and the other is limited to length
>  0.  This may have caused panics in PPPDISC.
>  
>  Wake up readers after all transitions of ICANON.  When ICANON is
>  turned off it is quite likely that characters will become available
>  to be read.
>  
>  Reduce indentation near these changes.

This change should go in 2.1.

Bruce