From: Bart Van Assche <Bart.VanAssche@sandisk.com>
To: "ming.lei@redhat.com" <ming.lei@redhat.com>
Cc: "hch@lst.de" <hch@lst.de>, "osandov@fb.com" <osandov@fb.com>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"hare@suse.com" <hare@suse.com>,
"axboe@kernel.dk" <axboe@kernel.dk>
Subject: Re: [PATCH 4/5] blk-mq-debugfs: Show busy requests
Date: Tue, 30 May 2017 17:29:25 +0000 [thread overview]
Message-ID: <1496165364.2627.17.camel@sandisk.com> (raw)
In-Reply-To: <20170527031634.GC20909@ming.t460p>
On Sat, 2017-05-27 at 11:16 +0800, Ming Lei wrote:
> What is the real motivation for this debug interface, could Bart explain
> a bit?
As mentioned in the description of this patch, the purpose of this patch
is to allow anyone who is working on a block driver to figure out whether
or not a request got stuck in a block driver. This means that .queue_rq()
got called for a request but the block driver did not trigger a call to
.end_io().
Bart.=
next prev parent reply other threads:[~2017-05-30 17:29 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-25 23:38 [PATCH 0/5] Five blk-mq-debugfs patches Bart Van Assche
2017-05-25 23:38 ` [PATCH 1/5] blk-mq: Only register debugfs attributes for blk-mq queues Bart Van Assche
2017-05-26 0:23 ` Omar Sandoval
2017-05-26 5:56 ` Hannes Reinecke
2017-05-26 13:27 ` Jens Axboe
2017-05-25 23:38 ` [PATCH 2/5] blk-mq-debugfs: Show atomic request flags Bart Van Assche
2017-05-26 5:56 ` Hannes Reinecke
2017-05-25 23:38 ` [PATCH 3/5] blk-mq-debugfs: Show requeue list Bart Van Assche
2017-05-26 5:57 ` Hannes Reinecke
2017-05-25 23:38 ` [PATCH 4/5] blk-mq-debugfs: Show busy requests Bart Van Assche
2017-05-26 13:26 ` Jens Axboe
2017-05-26 21:17 ` Bart Van Assche
2017-05-26 21:20 ` Jens Axboe
2017-05-26 21:21 ` Jens Axboe
2017-05-26 21:22 ` Bart Van Assche
2017-05-26 14:38 ` Hannes Reinecke
2017-05-26 21:27 ` Bart Van Assche
2017-05-26 21:32 ` Jens Axboe
2017-05-27 0:54 ` Ming Lei
2017-05-27 3:16 ` Ming Lei
2017-05-30 17:29 ` Bart Van Assche [this message]
2017-05-30 17:24 ` Bart Van Assche
2017-05-30 17:32 ` Jens Axboe
2017-05-25 23:38 ` [PATCH 5/5] blk-mq-debugfs: Add 'kick' operation Bart Van Assche
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