linux-kernel - Re: [PATCH v2] blktrace: Fix potentail deadlock between delete & sysfs ops

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Message-ID: <20170818132602.68a104e5@gandalf.local.home>
Date:   Fri, 18 Aug 2017 13:26:02 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Bart Van Assche <Bart.VanAssche@....com>
Cc:     "longman@...hat.com" <longman@...hat.com>,
        "bfields@...ldses.org" <bfields@...ldses.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "jlayton@...chiereds.net" <jlayton@...chiereds.net>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "axboe@...nel.dk" <axboe@...nel.dk>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH v2] blktrace: Fix potentail deadlock between delete &
 sysfs ops

On Fri, 18 Aug 2017 16:21:46 +0000
Bart Van Assche <Bart.VanAssche@....com> wrote:

> Sorry Waiman but personally I thoroughly detest loops around mutex_trylock() or
> mutex_timed_lock() because such loops are usually used to paper over a problem
> instead of fixing the root cause.

100% agree.

-- Steve