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From: Juergen Gross <jgross@suse.com>
To: Luis Chamberlain <mcgrof@kernel.org>,
	axboe@kernel.dk, colyli@suse.de, kent.overstreet@gmail.com,
	kbusch@kernel.org, sagi@grimberg.me, vishal.l.verma@intel.com,
	dan.j.williams@intel.com, dave.jiang@intel.com,
	ira.weiny@intel.com, konrad.wilk@oracle.com,
	roger.pau@citrix.com, boris.ostrovsky@oracle.com,
	sstabellini@kernel.org, minchan@kernel.org, ngupta@vflare.org,
	senozhatsky@chromium.org
Cc: xen-devel@lists.xenproject.org, nvdimm@lists.linux.dev,
	linux-nvme@lists.infradead.org, linux-bcache@vger.kernel.org,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 09/10] xen-blkfront: add error handling support for add_disk()
Date: Thu, 30 Sep 2021 15:07:44 +0200	[thread overview]
Message-ID: <50f5fcbe-fb34-1cb8-1965-dd3bfd7e1f12@suse.com> (raw)
In-Reply-To: <20210927220039.1064193-10-mcgrof@kernel.org>


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On 28.09.21 00:00, Luis Chamberlain wrote:
> We never checked for errors on device_add_disk() as this function
> returned void. Now that this is fixed, use the shiny new error
> handling. The function xlvbd_alloc_gendisk() typically does the
> unwinding on error on allocating the disk and creating the tag,
> but since all that error handling was stuffed inside
> xlvbd_alloc_gendisk() we must repeat the tag free'ing as well.
> 
> We set the info->rq to NULL to ensure blkif_free() doesn't crash
> on blk_mq_stop_hw_queues() on device_add_disk() error as the queue
> will be long gone by then.
> 
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen


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WARNING: multiple messages have this Message-ID (diff)
From: Juergen Gross <jgross@suse.com>
To: Luis Chamberlain <mcgrof@kernel.org>,
	axboe@kernel.dk, colyli@suse.de, kent.overstreet@gmail.com,
	kbusch@kernel.org, sagi@grimberg.me, vishal.l.verma@intel.com,
	dan.j.williams@intel.com, dave.jiang@intel.com,
	ira.weiny@intel.com, konrad.wilk@oracle.com,
	roger.pau@citrix.com, boris.ostrovsky@oracle.com,
	sstabellini@kernel.org, minchan@kernel.org, ngupta@vflare.org,
	senozhatsky@chromium.org
Cc: xen-devel@lists.xenproject.org, nvdimm@lists.linux.dev,
	linux-nvme@lists.infradead.org, linux-bcache@vger.kernel.org,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 09/10] xen-blkfront: add error handling support for add_disk()
Date: Thu, 30 Sep 2021 15:07:44 +0200	[thread overview]
Message-ID: <50f5fcbe-fb34-1cb8-1965-dd3bfd7e1f12@suse.com> (raw)
In-Reply-To: <20210927220039.1064193-10-mcgrof@kernel.org>


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On 28.09.21 00:00, Luis Chamberlain wrote:
> We never checked for errors on device_add_disk() as this function
> returned void. Now that this is fixed, use the shiny new error
> handling. The function xlvbd_alloc_gendisk() typically does the
> unwinding on error on allocating the disk and creating the tag,
> but since all that error handling was stuffed inside
> xlvbd_alloc_gendisk() we must repeat the tag free'ing as well.
> 
> We set the info->rq to NULL to ensure blkif_free() doesn't crash
> on blk_mq_stop_hw_queues() on device_add_disk() error as the queue
> will be long gone by then.
> 
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen


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_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

  reply	other threads:[~2021-09-30 13:07 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27 22:00 [PATCH v2 00/10] block: second batch of add_disk() error handling conversions Luis Chamberlain
2021-09-27 22:00 ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 01/10] block/brd: add error handling support for add_disk() Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 02/10] bcache: " Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 03/10] nvme-multipath: " Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:13   ` Keith Busch
2021-09-27 22:13     ` Keith Busch
2021-09-28  5:39   ` Hannes Reinecke
2021-09-28  5:39     ` Hannes Reinecke
2021-09-27 22:00 ` [PATCH v2 04/10] nvdimm/btt: do not call del_gendisk() if not needed Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 05/10] nvdimm/btt: use goto error labels on btt_blk_init() Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 06/10] nvdimm/btt: add error handling support for add_disk() Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 07/10] nvdimm/blk: avoid calling del_gendisk() on early failures Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 08/10] nvdimm/blk: add error handling support for add_disk() Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:00 ` [PATCH v2 09/10] xen-blkfront: " Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-30 13:07   ` Juergen Gross [this message]
2021-09-30 13:07     ` Juergen Gross
2021-09-27 22:00 ` [PATCH v2 10/10] zram: " Luis Chamberlain
2021-09-27 22:00   ` Luis Chamberlain
2021-09-27 22:33 ` [PATCH v2 00/10] block: second batch of add_disk() error handling conversions Jens Axboe
2021-09-27 22:33   ` Jens Axboe

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