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Message-ID: <alpine.LFD.2.01.0910140804180.6146@localhost.localdomain>
Date: Wed, 14 Oct 2009 08:07:36 -0700 (PDT)
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Alan Cox <alan@...rguk.ukuu.org.uk>
cc: Paul Fulghum <paulkf@...rogate.com>,
Boyan <btanastasov@...oo.co.uk>,
"Rafael J. Wysocki" <rjw@...k.pl>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Kernel Testers List <kernel-testers@...r.kernel.org>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Ed Tomlinson <edt@....ca>,
"OGAWA Hirofumi \"" <hirofumi@...l.parknet.co.jp>
Subject: Re: [Bug #14388] keyboard under X with 2.6.31
On Wed, 14 Oct 2009, Alan Cox wrote:
>
> Stop a moment. The code wasn't designed to permit two paralle calls of
> flush_to_ldisc to the same tty. That was always forbidden when that code
> was designed.
No, the code was clearly _designed_ for it - that's the whole and only
point of the
tty->buf.head = NULL;
line.
But it's certainly true that it just never happened before. At least for
the !low_latency case, I'm not so sure about the low_latency=1 case, but I
haven't checked either - it would depend on any higher-level
serialization.
Linus
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