From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Christian Brauner <brauner@kernel.org>,
Sagi Grimberg <sagi@grimberg.me>,
Kanchan Joshi <joshi.k@samsung.com>,
Hui Qi <hui81.qi@samsung.com>,
Nitesh Shetty <nj.shetty@samsung.com>, Jan Kara <jack@suse.cz>,
Pavel Begunkov <asml.silence@gmail.com>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
io-uring@vger.kernel.org
Subject: Re: [PATCH 14/15] nvme: enable FDP support
Date: Tue, 19 Nov 2024 19:24:27 +0100 [thread overview]
Message-ID: <20241119182427.GA20997@lst.de> (raw)
In-Reply-To: <ZzzWQFyq0Sv7cuHb@kbusch-mbp>
On Tue, Nov 19, 2024 at 11:17:36AM -0700, Keith Busch wrote:
> > + if (le32_to_cpu(configs[result.fdpcidx].nrg) > 1) {
> > + dev_warn(ns->ctrl->device, "FDP NRG > 1 not supported\n");
>
> Why not support multiple reclaim groups?
Can you come up with a sane API for that? And can you find devices in
the wild that actually support it?
> > + ns->head->runs = le64_to_cpu(configs[result.fdpcidx].runs);
>
> The config descriptors are variable length, so you can't just index into
> it. You have to read each index individually to get the next index's offset.
> Something like:
Indeed. The current code only works when the first config is selected.
next prev parent reply other threads:[~2024-11-19 18:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-19 12:16 support block layer write streams and FDP Christoph Hellwig
2024-11-19 12:16 ` [PATCH 01/15] fs: add write stream information to statx Christoph Hellwig
2024-11-19 12:16 ` [PATCH 02/15] fs: add a write stream field to the kiocb Christoph Hellwig
2024-11-19 12:16 ` [PATCH 03/15] io_uring: enable passing a per-io write stream Christoph Hellwig
2024-11-19 12:16 ` [PATCH 04/15] block: don't bother checking the data direction for merges Christoph Hellwig
2024-11-19 12:16 ` [PATCH 05/15] block: req->bio is always set in the merge code Christoph Hellwig
2024-11-19 12:16 ` [PATCH 06/15] block: add a bi_write_stream field Christoph Hellwig
2024-11-19 12:16 ` [PATCH 07/15] block: introduce max_write_streams queue limit Christoph Hellwig
2024-11-19 12:16 ` [PATCH 08/15] block: introduce a write_stream_granularity " Christoph Hellwig
2024-11-19 12:16 ` [PATCH 09/15] block: expose write streams for block device nodes Christoph Hellwig
2024-11-19 12:16 ` [PATCH 10/15] nvme: store the endurance group id in struct nvme_ns_head Christoph Hellwig
2024-11-19 12:16 ` [PATCH 11/15] nvme: pass a void pointer to nvme_get/set_features for the result Christoph Hellwig
2024-11-19 12:16 ` [PATCH 12/15] nvme: add a nvme_get_log_lsi helper Christoph Hellwig
2024-11-19 12:16 ` [PATCH 13/15] nvme.h: add FDP definitions Christoph Hellwig
2024-11-19 12:16 ` [PATCH 14/15] nvme: enable FDP support Christoph Hellwig
2024-11-19 18:17 ` Keith Busch
2024-11-19 18:24 ` Christoph Hellwig [this message]
2024-11-19 22:49 ` Keith Busch
2024-11-20 6:03 ` Christoph Hellwig
2024-11-19 12:16 ` [PATCH 15/15] RFC: block: allow write streams on partitions Christoph Hellwig
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