From: Hannes Reinecke <hare@suse.de>
To: John Garry <john.garry@huawei.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
James Bottomley <james.bottomley@hansenpartnership.com>,
linux-scsi@vger.kernel.org, Ming Lei <ming.lei@redhat.com>
Subject: Re: [PATCH RFC 00/24] scsi: enable reserved commands for LLDDs
Date: Mon, 26 Aug 2019 17:27:45 +0200 [thread overview]
Message-ID: <3a92946e-e967-bc68-e995-2c28ae455566@suse.de> (raw)
In-Reply-To: <e5c2b01a-71d9-ef94-3bf6-0830d866e4cf@huawei.com>
On 8/23/19 3:26 PM, John Garry wrote:
> On 29/05/2019 14:28, Hannes Reinecke wrote:
>> Hi all,
>>
>> quite some drivers use internal commands for various purposes, most
>> commonly sending TMFs or querying the HBA status.
>> While these commands use the same submission mechanism than normal
>> I/O commands, they will not be counted as outstanding commands,
>> requiring those drivers to implement their own mechanism to figure
>> out outstanding commands.
>> This patchset enables the use of reserved tags for the SCSI midlayer,
>> enabling LLDDs to rely on the block layer for tracking outstanding
>> commands.
>> More importantly, it allows LLDD to request a valid tag from the block
>> layer without having to implement some tracking mechanism within the
>> driver. This removes quite some hacks which were required for some
>> drivers (eg. fnic or snic).
>>
>> As usual, comments and reviews are welcome.
>>
>
> Hi Hannes,
>
> I was wondering if you have any plans to progress this series?
>
> I don't mind helping out...
>
Thanks for the reminder.
I'll need to re-evaluate this where we stand now with shared tags;
this patchset partially relies on them.
Will be sending an updated patchset.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer
next prev parent reply other threads:[~2019-08-26 15:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190529132901.27645-1-hare@suse.de>
2019-08-23 13:26 ` [PATCH RFC 00/24] scsi: enable reserved commands for LLDDs John Garry
2019-08-26 15:27 ` Hannes Reinecke [this message]
2019-09-02 8:47 ` John Garry
2019-09-09 15:11 ` Hannes Reinecke
2020-03-09 12:48 ` John Garry
2020-03-09 13:57 ` Hannes Reinecke
2020-03-09 14:21 ` John Garry
2020-03-10 8:43 ` John Garry
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