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From: Christoph Hellwig <[email protected]>
To: Bart Van Assche <[email protected]>
Cc: Christoph Hellwig <[email protected]>, Keith Busch <[email protected]>,
	[email protected], [email protected],
	[email protected], [email protected],
	[email protected], [email protected],
	[email protected], Keith Busch <[email protected]>,
	Hannes Reinecke <[email protected]>
Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits
Date: Wed, 30 Oct 2024 06:42:07 +0100	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On Tue, Oct 29, 2024 at 10:18:31AM -0700, Bart Van Assche wrote:
> On 10/29/24 8:26 AM, Christoph Hellwig wrote:
>> Bart, btw: I think the current sd implementation is buggy as well, as
>> it assumes the permanent streams are ordered by their data temperature
>> in the IO Advise hints mode page, but I can't find anything in the
>> spec that requires a particular ordering.
>
> How about modifying sd_read_io_hints() such that permanent stream
> information is ignored if the order of the RELATIVE LIFETIME information
> reported by the GET STREAM STATUS command does not match the permanent
> stream order?

That seems odd as there is nothing implying that they should be ordered.
The logic thing to do would be to a little array mapping the linux
temperature levels to the streams ids.


  reply	other threads:[~2024-10-30  5:42 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-29 15:19 [PATCHv10 0/9] write hints with nvme fdp, scsi streams Keith Busch
2024-10-29 15:19 ` [PATCHv10 1/9] block: use generic u16 for write hints Keith Busch
2024-10-29 17:21   ` Bart Van Assche
2024-10-29 15:19 ` [PATCHv10 2/9] block: introduce max_write_hints queue limit Keith Busch
2024-10-29 15:19 ` [PATCHv10 3/9] statx: add write hint information Keith Busch
2024-10-29 15:19 ` [PATCHv10 4/9] block: allow ability to limit partition write hints Keith Busch
2024-10-29 15:23   ` Christoph Hellwig
2024-10-29 17:25   ` Bart Van Assche
2024-10-30  4:46     ` Christoph Hellwig
2024-10-29 15:19 ` [PATCHv10 5/9] block, fs: add write hint to kiocb Keith Busch
2024-10-29 15:19 ` [PATCHv10 6/9] io_uring: enable per-io hinting capability Keith Busch
2024-10-29 15:19 ` [PATCHv10 7/9] block: export placement hint feature Keith Busch
2024-10-29 15:19 ` [PATCHv10 8/9] nvme: enable FDP support Keith Busch
2024-10-30  0:24   ` Chaitanya Kulkarni
2024-10-29 15:19 ` [PATCHv10 9/9] scsi: set permanent stream count in block limits Keith Busch
2024-10-29 15:26   ` Christoph Hellwig
2024-10-29 15:34     ` Keith Busch
2024-10-29 15:37       ` Christoph Hellwig
2024-10-29 15:38         ` Keith Busch
2024-10-29 15:53           ` Christoph Hellwig
2024-10-29 16:22             ` Keith Busch
2024-10-30  4:55               ` Christoph Hellwig
2024-10-29 17:18     ` Bart Van Assche
2024-10-30  5:42       ` Christoph Hellwig [this message]
2024-10-29 15:24 ` [PATCHv10 0/9] write hints with nvme fdp, scsi streams Christoph Hellwig

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