linux-kernel - [PATCH v3 0/3] Rust block device driver API and null block driver

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Date: Sat,  1 Jun 2024 10:18:03 +0200
From: Andreas Hindborg <nmi@...aspace.dk>
To: Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>,
	Keith Busch <kbusch@...nel.org>,
	Damien Le Moal <dlemoal@...nel.org>,
	Bart Van Assche <bvanassche@....org>,
	Hannes Reinecke <hare@...e.de>,
	Ming Lei <ming.lei@...hat.com>,
	"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>
Cc: Andreas Hindborg <a.hindborg@...sung.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Matthew Wilcox <willy@...radead.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Chaitanya Kulkarni <chaitanyak@...dia.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Yexuan Yang <1182282462@...t.edu.cn>,
	Sergio González Collado <sergio.collado@...il.com>,
	Joel Granados <j.granados@...sung.com>,
	"Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>,
	Daniel Gomez <da.gomez@...sung.com>,
	Niklas Cassel <Niklas.Cassel@....com>,
	Philipp Stanner <pstanner@...hat.com>,
	Conor Dooley <conor@...nel.org>,
	Johannes Thumshirn <Johannes.Thumshirn@....com>,
	Matias Bjørling <m@...rling.me>,
	open list <linux-kernel@...r.kernel.org>,
	"rust-for-linux@...r.kernel.org" <rust-for-linux@...r.kernel.org>,
	"lsf-pc@...ts.linux-foundation.org" <lsf-pc@...ts.linux-foundation.org>,
	"gost.dev@...sung.com" <gost.dev@...sung.com>
Subject: [PATCH v3 0/3] Rust block device driver API and null block driver

From: Andreas Hindborg <a.hindborg@...sung.com>

Hi!

Rebased on v6.10-rc1 and implemented a ton of improvements suggested by Benno. v2 is here [2]

Changes from v2:

 - implement `atomic_relaxed_op_return` in terms of `AtomicU64::fetch_update`.
 - update `Request` docs with state tracking info
 - link all types in docs
 - add invariant to `TagSet`
 - do not unwrap pin in `TagSet::drop`
 - remove references to `try_ffi_init` from comments
 - numerous typo fixes
 - code formatting fixes
 - remove remote completion logic
 - move `gen_disk::try_new` into `GenDisk` impl
 - make `GenDiskState` sealed
 - add a default state for `GenDisk`
 - conditionally call `del_gendisk` on `GenDisk` drop
 - move `add_disk` into `init` functon in rnull module
 - improve error message in request completion assertion
 - rebased on v6.10-rc1

Best regards,
Andreas Hindborg


Link: https://lore.kernel.org/all/20240521140323.2960069-1-nmi@metaspace.dk/ [1]


Andreas Hindborg (3):
  rust: block: introduce `kernel::block::mq` module
  rust: block: add rnull, Rust null_blk implementation
  MAINTAINERS: add entry for Rust block device driver API

 MAINTAINERS                        |  14 ++
 drivers/block/Kconfig              |   9 ++
 drivers/block/Makefile             |   3 +
 drivers/block/rnull.rs             |  78 +++++++++
 rust/bindings/bindings_helper.h    |   2 +
 rust/helpers.c                     |  16 ++
 rust/kernel/block.rs               |   5 +
 rust/kernel/block/mq.rs            |  97 ++++++++++++
 rust/kernel/block/mq/gen_disk.rs   | 222 ++++++++++++++++++++++++++
 rust/kernel/block/mq/operations.rs | 233 +++++++++++++++++++++++++++
 rust/kernel/block/mq/raw_writer.rs |  55 +++++++
 rust/kernel/block/mq/request.rs    | 246 +++++++++++++++++++++++++++++
 rust/kernel/block/mq/tag_set.rs    |  97 ++++++++++++
 rust/kernel/error.rs               |   6 +
 rust/kernel/lib.rs                 |   2 +
 15 files changed, 1085 insertions(+)
 create mode 100644 drivers/block/rnull.rs
 create mode 100644 rust/kernel/block.rs
 create mode 100644 rust/kernel/block/mq.rs
 create mode 100644 rust/kernel/block/mq/gen_disk.rs
 create mode 100644 rust/kernel/block/mq/operations.rs
 create mode 100644 rust/kernel/block/mq/raw_writer.rs
 create mode 100644 rust/kernel/block/mq/request.rs
 create mode 100644 rust/kernel/block/mq/tag_set.rs


base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
-- 
2.45.1