From: Bart Van Assche <bvanassche@acm.org>
To: Christoph Hellwig <hch@lst.de>, martin.petersen@oracle.com
Cc: axboe@kernel.dk, 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: Tue, 26 Oct 2021 09:36:43 -0700 [thread overview]
Message-ID: <99641481-523a-e5a9-db48-dac2b547b4bd@acm.org> (raw)
In-Reply-To: <20211026071204.1709318-1-hch@lst.de>
On 10/26/21 12:12 AM, Christoph Hellwig wrote:
> The HPB support added this merge window is fundanetally flawed as it
^^^^^^^^^^^^
fundanetally -> fundamentally
Since the implementation can be reworked not to use
blk_insert_cloned_request() I'm not sure using the word "fundamentally"
is appropriate.
> uses blk_insert_cloned_request to insert a cloned request onto the same
> queue as the one that the original request came from, leading to all
> kinds of issues in blk-mq accounting (in addition to this API being
> a special case for dm-mpath that should not see other users).
More detailed information would have been welcome.
> Fixes: f02bc9754a68 ("scsi: ufs: ufshpb: Introduce Host Performance Buffer
> feature")
I assume that you wanted to refer to commit 41d8a9333cc9 ("scsi: ufs: ufshpb:
Add HPB 2.0 support") instead since that commit is the only commit that
introduced a blk_insert_cloned_request() call in the UFS HPB code?
Bart.
next prev parent reply other threads:[~2021-10-26 16:36 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 [this message]
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
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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