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From: Greg KH <gregkh@linuxfoundation.org>
To: Martin Kepplinger <martink@posteo.de>
Cc: jslaby@suse.com, linux-kernel@vger.kernel.org,
	Manfred Schlaegl <manfred.schlaegl@ginzinger.com>,
	Martin Kepplinger <martin.kepplinger@ginzinger.com>
Subject: Re: [PATCH] tty: increase the default flip buffer limit to 2*640K
Date: Mon, 28 Jan 2019 17:53:18 +0100	[thread overview]
Message-ID: <20190128165318.GA16213@kroah.com> (raw)
In-Reply-To: <20190128163843.688-1-martink@posteo.de>

On Mon, Jan 28, 2019 at 05:38:43PM +0100, Martin Kepplinger wrote:
> From: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
> 
> The default value for this was 64K. We increase this by a factor of
> 10 to 640K to prevent data loss when using fast serial interfaces.

What fast serial interface are you using where you run into this limit?

> Since this value is only a maximum limit for allocation and isn't used
> by default, this change has minimal effect on systems with slow interfaces.

So what systems does it affect?

> Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
> ---
> 
> Is there any reason for this _limit_ to be as small as 64K?

Historical mostly from what I can tell.

thanks,

greg k-h

  reply	other threads:[~2019-01-28 16:53 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-28 16:38 Martin Kepplinger
2019-01-28 16:53 ` Greg KH [this message]
2019-01-28 17:25   ` Martin Kepplinger

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