linux-kernel - Re: [PATCH] tty: Correct tty buffer flushing.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <50BDCC4F.10505@ilyx.ru>
Date:	Tue, 04 Dec 2012 14:11:27 +0400
From:	Ilya Zykov <ilya@...x.ru>
To:	Alan Cox <alan@...ux.intel.com>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Xiaobing Tu <xiaobing.tu@...el.com>,
	Jiri Slaby <jslaby@...e.cz>, Alek Du <alek.du@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH] tty: Correct tty buffer flushing.

On 04.12.2012 12:53, Alan Cox wrote:
>> Main idea here -  we never flash last (struct tty_buffer) in the
>> active buffer. Only data for ldisc. (tty->buf.head->read =
>> tty->buf.head->commit). At that moment driver can collect(write) data
>> in buffer without conflict.
> 
> This one I agree with (sorry it took a while to get to, I wanted to sit
> and think carefully about it as it is subtle and clever)
> 
> Can you generate a single patch which reverts the unneeded locks and
> adds this instead. Add a Signed-off-by and send it to Greg to get it
> into 3.8/3.9 somewhere.
> 
> Thanks
> 
> Alan
> 

OK.
Thank you.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/