From: Christoph Hellwig <hch@infradead.org>
To: Waiman Long <longman@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>,
Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-block@vger.kernel.org, linux-nilfs@vger.kernel.org,
cluster-devel@redhat.com,
Bart Van Assche <Bart.VanAssche@wdc.com>
Subject: Re: [PATCH v6 1/2] blktrace: Fix potentail deadlock between delete & sysfs ops
Date: Mon, 18 Sep 2017 17:01:55 -0700 [thread overview]
Message-ID: <20170919000155.GA30806@infradead.org> (raw)
In-Reply-To: <1505760831-7747-2-git-send-email-longman@redhat.com>
Taking a look at this it seems like using a lock in struct block_device
isn't the right thing to do anyway - all the action is on fields in
struct blk_trace, so having a lock inside that would make a lot more
sense.
It would also help to document what exactly we're actually protecting.
next prev parent reply other threads:[~2017-09-19 0:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 18:53 [PATCH v6 0/2] blktrace: Fix deadlock problem Waiman Long
2017-09-18 18:53 ` [PATCH v6 1/2] blktrace: Fix potentail deadlock between delete & sysfs ops Waiman Long
2017-09-19 0:01 ` Christoph Hellwig [this message]
2017-09-19 12:49 ` Waiman Long
2017-09-19 14:38 ` Christoph Hellwig
2017-09-19 15:58 ` Waiman Long
2017-09-19 20:41 ` Christoph Hellwig
2017-09-19 21:58 ` Steven Rostedt
2017-09-18 18:53 ` [PATCH v6 2/2] block_dev: Rename bd_fsfreeze_mutex Waiman Long
2017-09-18 23:47 ` Christoph Hellwig
2017-09-19 12:43 ` Waiman Long
2017-09-18 21:14 ` [PATCH v6 0/2] blktrace: Fix deadlock problem Steven Rostedt
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