From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@meta.com>
Cc: linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
axboe@kernel.dk, hch@lst.de, io-uring@vger.kernel.org,
linux-fsdevel@vger.kernel.org, joshi.k@samsung.com,
javier.gonz@samsung.com, Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCHv8 2/6] block: use generic u16 for write hints
Date: Fri, 18 Oct 2024 07:46:44 +0200 [thread overview]
Message-ID: <20241018054643.GA20262@lst.de> (raw)
In-Reply-To: <20241017160937.2283225-3-kbusch@meta.com>
On Thu, Oct 17, 2024 at 09:09:33AM -0700, Keith Busch wrote:
> From: Keith Busch <kbusch@kernel.org>
>
> This is still backwards compatible with lifetime hints. It just doesn't
> constrain the hints to that definition.
So in the end we'll end up with two uses of it - the existing 5
temperature hints and the new stream separation. I think it
would be cleaner to make it a union, but I don't care that
strongly.
But we probably want a way to distinguish which one is supported.
E.g. for SCSI we set a net BLK_FEAT_WRITE_HINTS, for NVMe we'll set
BLK_FEAT_STREAM_SEPARATION.
Either way this should probably be the first patch in the series.
next prev parent reply other threads:[~2024-10-18 5:46 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-17 16:09 [PATCHv8 0/6] write hints for nvme fdp Keith Busch
2024-10-17 16:09 ` [PATCHv8 1/6] block, fs: restore kiocb based write hint processing Keith Busch
2024-10-18 5:50 ` Christoph Hellwig
2024-10-21 15:47 ` Keith Busch
2024-10-21 17:09 ` Bart Van Assche
2024-10-21 19:35 ` Keith Busch
2024-10-22 6:43 ` Christoph Hellwig
2024-10-22 14:37 ` Keith Busch
2024-10-22 14:40 ` Christoph Hellwig
2024-10-18 16:11 ` Bart Van Assche
2024-10-17 16:09 ` [PATCHv8 2/6] block: use generic u16 for write hints Keith Busch
2024-10-18 5:46 ` Christoph Hellwig [this message]
2024-10-24 19:45 ` Keith Busch
2024-10-25 12:20 ` Christoph Hellwig
2024-10-18 6:00 ` Hannes Reinecke
2024-10-18 16:12 ` Bart Van Assche
2024-10-21 15:03 ` Keith Busch
2024-10-17 16:09 ` [PATCHv8 3/6] block: introduce max_write_hints queue limit Keith Busch
2024-10-18 5:51 ` Christoph Hellwig
2024-10-18 6:01 ` Hannes Reinecke
2024-10-18 16:18 ` Bart Van Assche
2024-10-21 15:02 ` Keith Busch
2024-10-17 16:09 ` [PATCHv8 4/6] fs: introduce per-io hint support flag Keith Busch
2024-10-18 5:52 ` Christoph Hellwig
2024-10-18 6:03 ` Hannes Reinecke
2024-10-17 16:09 ` [PATCHv8 5/6] io_uring: enable per-io hinting capability Keith Busch
2024-10-18 5:53 ` Christoph Hellwig
2024-10-18 6:03 ` Hannes Reinecke
2024-10-17 16:09 ` [PATCHv8 6/6] nvme: enable FDP support Keith Busch
2024-10-18 10:48 ` Kanchan Joshi
2024-10-21 15:08 ` Keith Busch
2024-10-19 14:54 ` kernel test robot
2024-10-23 18:41 ` Dan Carpenter
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