From: Damien Le Moal <Damien.LeMoal@wdc.com>
To: Jens Axboe <axboe@kernel.dk>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH v9 0/5] Initial support for multi-actuator HDDs
Date: Wed, 27 Oct 2021 02:49:05 +0000 [thread overview]
Message-ID: <CH2PR04MB70782D5877F24ECC9A0F644AE7859@CH2PR04MB7078.namprd04.prod.outlook.com> (raw)
In-Reply-To: cea34b2a-6835-d090-4f0c-3bf456a6ed00@kernel.dk
On 2021/10/27 11:38, Jens Axboe wrote:
> On 10/26/21 8:22 PM, Damien Le Moal wrote:
>> From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
>>
>> Single LUN multi-actuator hard-disks are cappable to seek and execute
>> multiple commands in parallel. This capability is exposed to the host
>> using the Concurrent Positioning Ranges VPD page (SCSI) and Log (ATA).
>> Each positioning range describes the contiguous set of LBAs that an
>> actuator serves.
>>
>> This series adds support to the scsi disk driver to retreive this
>> information and advertize it to user space through sysfs. libata is
>> also modified to handle ATA drives.
>>
>> The first patch adds the block layer plumbing to expose concurrent
>> sector ranges of the device through sysfs as a sub-directory of the
>> device sysfs queue directory. Patch 2 and 3 add support to sd and
>> libata. Finally patch 4 documents the sysfs queue attributed changes.
>> Patch 5 fixes a typo in the document file (strictly speaking, not
>> related to this series).
>>
>> This series does not attempt in any way to optimize accesses to
>> multi-actuator devices (e.g. block IO schedulers or filesystems). This
>> initial support only exposes the independent access ranges information
>> to user space through sysfs.
>
> I've applied 1/9 for now, as that clearly belongs in the block tree.
> Might be the cleanest if SCSI does a post tree that depends on
> for-5.16/block. Or I can apply it all as they are reviewed. Let me
> know.
Forgot: They are all reviewed, including Martin who sent a Reviewed-by for the
series, but not an Acked-by for patch 2. As for libata patch 3, obviously, this
is Acked-by me.
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2021-10-27 2:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-27 2:22 [PATCH v9 0/5] Initial support for multi-actuator HDDs Damien Le Moal
2021-10-27 2:22 ` [PATCH v9 1/5] block: Add independent access ranges support Damien Le Moal
2021-10-27 2:22 ` [PATCH v9 2/5] scsi: sd: add concurrent positioning " Damien Le Moal
2021-10-27 2:22 ` [PATCH v9 3/5] libata: support concurrent positioning ranges log Damien Le Moal
2021-11-02 10:40 ` Geert Uytterhoeven
2021-11-02 11:42 ` Damien Le Moal
2021-11-02 14:02 ` Geert Uytterhoeven
2021-11-04 6:20 ` Damien Le Moal
2021-10-27 2:22 ` [PATCH v9 4/5] doc: document sysfs queue/independent_access_ranges attributes Damien Le Moal
2021-10-27 2:22 ` [PATCH v9 5/5] doc: Fix typo in request queue sysfs documentation Damien Le Moal
2021-10-27 2:37 ` (subset) [PATCH v9 0/5] Initial support for multi-actuator HDDs Jens Axboe
2021-10-27 2:38 ` Jens Axboe
2021-10-27 2:46 ` Damien Le Moal
2021-10-27 2:52 ` Martin K. Petersen
2021-10-27 2:53 ` Damien Le Moal
2021-10-27 2:49 ` Damien Le Moal [this message]
2021-10-27 3:03 ` Jens Axboe
2021-10-27 3:42 ` Damien Le Moal
2021-10-27 3:03 ` (subset) " Jens Axboe
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