From: Christoph Hellwig <hch@infradead.org>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Christoph Hellwig <hch@infradead.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Jaegeuk Kim <jaegeuk@kernel.org>,
linux-scsi@vger.kernel.org,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
Can Guo <cang@codeaurora.org>, Bean Huo <beanhuo@micron.com>,
Stanley Chu <stanley.chu@mediatek.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Asutosh Das <asutoshd@codeaurora.org>,
Hannes Reinecke <hare@suse.com>,
John Garry <john.garry@huawei.com>
Subject: Re: [PATCH 2/2] scsi: ufs: Fix a deadlock in the error handler
Date: Wed, 3 Nov 2021 09:41:23 -0700 [thread overview]
Message-ID: <YYK7s7zN3SxEEJGm@infradead.org> (raw)
In-Reply-To: <5711eeec-e607-48fd-7c51-4d6f33fbb1ec@acm.org>
On Wed, Nov 03, 2021 at 09:39:32AM -0700, Bart Van Assche wrote:
> How about changing the blk_mq_alloc_request() / blk_put_request() calls in
> ufshcd_exec_dev_cmd() and __ufshcd_issue_tm_cmd() into
> scsi_{get,put}_internal_command() calls once Hannes' patch series that
> introduces these functions is upstream? See also "[PATCH 03/18] scsi: add
> scsi_{get,put}_internal_cmd() helper"
> (https://lore.kernel.org/linux-scsi/20210503150333.130310-4-hare@suse.de/).
> See also patch "[PATCH 10/18] scsi: implement reserved command handling"
> (https://lore.kernel.org/linux-scsi/20210503150333.130310-11-hare@suse.de/).
Well, if they don't even need the command at all an API that just
returns the tag might be even better. But yes, we need some SCSI layer
abstraction and Hannes and John are currently looking into that.
next prev parent reply other threads:[~2021-11-03 16:41 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-03 0:05 [PATCH 0/2] Fix a deadlock in the UFS error handler Bart Van Assche
2021-11-03 0:05 ` [PATCH 1/2] scsi: core: Add support for reserved tags Bart Van Assche
2021-11-09 21:09 ` Bart Van Assche
2021-11-10 6:59 ` Hannes Reinecke
2021-11-10 19:19 ` Bart Van Assche
2021-11-11 6:54 ` Hannes Reinecke
2021-11-15 18:46 ` Bart Van Assche
2021-11-17 0:46 ` Bart Van Assche
2021-11-03 0:05 ` [PATCH 2/2] scsi: ufs: Fix a deadlock in the error handler Bart Van Assche
2021-11-03 6:56 ` Adrian Hunter
2021-11-03 13:40 ` Bart Van Assche
2021-11-03 14:03 ` Adrian Hunter
2021-11-07 11:07 ` Avri Altman
2021-11-08 18:26 ` Bart Van Assche
2021-11-03 7:40 ` Christoph Hellwig
2021-11-03 8:37 ` Adrian Hunter
2021-11-03 16:33 ` Christoph Hellwig
2021-11-03 16:48 ` Bart Van Assche
2021-11-03 13:45 ` Bart Van Assche
2021-11-03 16:27 ` Christoph Hellwig
2021-11-03 16:39 ` Bart Van Assche
2021-11-03 16:41 ` Christoph Hellwig [this message]
2022-02-18 18:04 [PATCH 0/2] Backport an UFS error handler fix to the 5.15 stable tree Bart Van Assche
2022-02-18 18:04 ` [PATCH 2/2] scsi: ufs: Fix a deadlock in the error handler Bart Van Assche
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