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From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
To: Jens Axboe <axboe@kernel.dk>,
	Damien Le Moal <Damien.LeMoal@wdc.com>,
	"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 12:42:10 +0900	[thread overview]
Message-ID: <c47af2f2-2d33-fc54-efe3-f20b286e80c5@opensource.wdc.com> (raw)
In-Reply-To: <64a81be7-ef62-8f8c-bfdc-759e04530366@kernel.dk>

On 2021/10/27 12:03, Jens Axboe wrote:
> On 10/26/21 8:49 PM, Damien Le Moal wrote:
>> 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.
> 
> Queued up 2-5 in the for-5.16/scsi-ma branch.
> 

Thanks !

-- 
Damien Le Moal
Western Digital Research

  reply	other threads:[~2021-10-27  3:42 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
2021-10-27  3:03     ` Jens Axboe
2021-10-27  3:42       ` Damien Le Moal [this message]
2021-10-27  3:03 ` (subset) " Jens Axboe

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