linux-kernel - Re: [PATCH v6 1/2] blktrace: Fix potentail deadlock between delete & sysfs ops

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: <20170919175823.51e3413d@gandalf.local.home>
Date:   Tue, 19 Sep 2017 17:58:23 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Waiman Long <longman@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-nilfs@...r.kernel.org, cluster-devel@...hat.com,
        Bart Van Assche <Bart.VanAssche@....com>
Subject: Re: [PATCH v6 1/2] blktrace: Fix potentail deadlock between delete
 & sysfs ops

On Tue, 19 Sep 2017 13:41:35 -0700
Christoph Hellwig <hch@...radead.org> wrote:

> Call it blk_trace mutex and move it right next to the blk_trace
> structure:
> 
> ifdef CONFIG_BLK_DEV_IO_TRACE
>         struct blk_trace        *blk_trace;
> 	struct mutex		blk_trace_mutex;
> #endif
> 
> which makes it completely obvious to any read what you are protecting
> with it.

As a 1000ft away bystander, this appears to be the most logical
solution.

-- Steve