From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <Bart.VanAssche@wdc.com>
From: Bart Van Assche <Bart.VanAssche@wdc.com>
To: "mingo@kernel.org" <mingo@kernel.org>, "longman@redhat.com"
	<longman@redhat.com>, "rostedt@goodmis.org" <rostedt@goodmis.org>,
	"axboe@kernel.dk" <axboe@kernel.dk>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>
Subject: Re: [PATCH v4] blktrace: Fix potentail deadlock between delete &
 sysfs ops
Date: Fri, 18 Aug 2017 20:18:13 +0000
Message-ID: <1503087492.2622.13.camel@wdc.com>
References: <1503086474-20187-1-git-send-email-longman@redhat.com>
In-Reply-To: <1503086474-20187-1-git-send-email-longman@redhat.com>
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
List-ID: <linux-block@vger.kernel.org>
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