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From: Christoph Hellwig <[email protected]>
To: Keith Busch <[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], [email protected],
	Hannes Reinecke <[email protected]>
Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits
Date: Wed, 30 Oct 2024 16:45:56 +0100	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On Wed, Oct 30, 2024 at 09:41:39AM -0600, Keith Busch wrote:
> On Wed, Oct 30, 2024 at 05:55:26AM +0100, Christoph Hellwig wrote:
> > On Tue, Oct 29, 2024 at 10:22:56AM -0600, Keith Busch wrote:
> > 
> > > No need to create a new fcntl. The people already testing this are
> > > successfully using FDP with the existing fcntl hints. Their applications
> > > leverage FDP as way to separate files based on expected lifetime. It is
> > > how they want to use it and it is working above expectations. 
> > 
> > FYI, I think it's always fine and easy to map the temperature hits to
> > write streams if that's all the driver offers.  It loses a lot of the
> > capapilities, but as long as it doesn't enforce a lower level interface
> > that never exposes more that's fine.
> 
> But that's just the v2 from this sequence:
> 
> https://lore.kernel.org/linux-nvme/[email protected]/
> 
> If you're okay with it now, then let's just go with that and I'm happy
> continue iterating on the rest separately. 

That's exactly what I do not want - it takes the temperature hints
and force them into the write streams down in the driver with no
way to make actually useful use of the stream separation.

  reply	other threads:[~2024-10-30 15:46 UTC|newest]

Thread overview: 42+ 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
2024-10-30 20:11       ` Keith Busch
2024-10-30 20:26         ` Bart Van Assche
2024-10-30 20:37           ` Keith Busch
2024-10-30 21:15             ` Bart Van Assche
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
2024-10-30 15:41                 ` Keith Busch
2024-10-30 15:45                   ` Christoph Hellwig [this message]
2024-10-30 15:48                     ` Keith Busch
2024-10-30 15:50                       ` Christoph Hellwig
2024-10-30 16:42                         ` Keith Busch
2024-10-30 16:57                           ` Christoph Hellwig
2024-10-30 17:05                             ` Keith Busch
2024-10-30 17:15                               ` Christoph Hellwig
2024-10-30 17:23                             ` Keith Busch
2024-10-30 22:32                             ` Keith Busch
2024-10-30 16:59                 ` Bart Van Assche
2024-10-30 17:14                   ` Christoph Hellwig
2024-10-30 17:44                     ` Bart Van Assche
2024-10-29 17:18     ` Bart Van Assche
2024-10-30  5:42       ` Christoph Hellwig
2024-10-29 15:24 ` [PATCHv10 0/9] write hints with nvme fdp, scsi streams Christoph Hellwig

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