From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <kbusch@kernel.org>,
Bart Van Assche <bvanassche@acm.org>,
Christoph Hellwig <hch@lst.de>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
Jaegeuk Kim <jaegeuk@kernel.org>,
alim.akhtar@samsung.com, avri.altman@wdc.com,
linux-scsi@vger.kernel.org, linux-block@vger.kernel.org
Subject: Re: [PATCH] scsi: ufs: mark HPB support as BROKEN
Date: Wed, 27 Oct 2021 11:44:04 -0400 [thread overview]
Message-ID: <yq1wnlyzday.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <YXltPgRTxe+Xn66i@T590> (Ming Lei's message of "Wed, 27 Oct 2021 23:16:14 +0800")
Ming,
> request with scsi_cmnd may be allocated by the ufshpb driver, even it
> should be fine to call ufshcd_queuecommand() directly for this driver
> private IO, if the tag can be reused. One example is scsi_ioctl_reset().
scsi_ioctl_reset() allocates a new request, though, so that doesn't
solve the forward progress guarantee. Whereas eh puts the saved request
on the stack.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2021-10-27 15:44 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 7:12 [PATCH] scsi: ufs: mark HPB support as BROKEN Christoph Hellwig
2021-10-26 7:18 ` Hannes Reinecke
2021-10-26 7:24 ` Damien Le Moal
2021-10-26 13:04 ` James Bottomley
2021-10-26 16:36 ` Bart Van Assche
2021-10-26 17:19 ` James Bottomley
2021-10-26 17:25 ` Jens Axboe
2021-10-26 18:05 ` Bart Van Assche
2021-10-26 18:10 ` Jens Axboe
2021-10-26 18:18 ` James Bottomley
2021-10-26 18:27 ` Martin K. Petersen
2021-10-26 20:10 ` Bart Van Assche
2021-10-26 22:22 ` Daejun Park
2021-10-27 5:27 ` Christoph Hellwig
2021-10-27 12:20 ` James Bottomley
2021-10-28 20:21 ` Bart Van Assche
2021-10-28 20:33 ` James Bottomley
2021-10-28 20:53 ` Bart Van Assche
2021-10-28 21:14 ` Daejun Park
2021-10-27 13:16 ` Bart Van Assche
2021-10-27 14:12 ` Keith Busch
2021-10-27 14:38 ` Jens Axboe
2021-10-27 14:43 ` James Bottomley
2021-10-27 15:03 ` Ming Lei
2021-10-27 15:06 ` Jens Axboe
2021-10-27 15:16 ` Ming Lei
2021-10-27 15:44 ` Martin K. Petersen [this message]
2021-10-27 15:58 ` Ming Lei
2021-10-27 16:16 ` Keith Busch
2021-10-27 16:19 ` Jens Axboe
2021-10-28 0:42 ` Ming Lei
2021-10-28 1:10 ` Daejun Park
2021-10-28 2:07 ` Ming Lei
2021-10-27 16:59 ` Martin K. Petersen
2021-10-27 15:35 ` Martin K. Petersen
2021-10-27 15:40 ` Jens Axboe
2021-10-27 16:16 ` Martin K. Petersen
2021-10-27 17:01 ` Bart Van Assche
2021-10-28 1:32 ` Ming Lei
2021-10-29 10:53 ` Christoph Hellwig
2021-10-29 11:39 ` James Bottomley
2021-10-29 13:35 ` Avri Altman
2021-10-29 13:44 ` James Bottomley
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