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When allocating `struct gendisk`, `GenDiskBuilder` is using a dynamic
lock class key without registering the key. This is an incorrect use of
the API, which causes a `WARN` trace.
Fix the issue by using a static lock class key, which is more appropriate
for the situation anyway.
Fixes: 3253aba3408a ("rust: block: introduce `kernel::block::mq` module")
Reported-by: Behme Dirk (XC-CP/ESB5) <Dirk.Behme@de.bosch.com>
Closes: https://rust-for-linux.zulipchat.com/#narrow/stream/x/topic/x/near/457090036
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Link: https://lore.kernel.org/r/20240815074519.2684107-3-nmi@metaspace.dk
[ Applied `rustfmt`, reworded slightly and made Zulip link
a permalink. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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`blk_queue_flag_set` and `blk_queue_flag_clear` was removed in favor of a
new API. This caused a build error for Rust block device abstractions.
Thus, use the new feature passing API instead of the old removed API.
Fixes: bd4a633b6f7c ("block: move the nonrot flag to queue_limits")
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Link: https://lore.kernel.org/r/20240620085721.1218296-1-nmi@metaspace.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The Rust block layer API was using the old queue limit API, which was just
removed. Use the new API instead.
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Fixes: 3253aba3408a ("rust: block: introduce `kernel::block::mq` module")
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Link: https://lore.kernel.org/r/20240614235350.621121-1-nmi@metaspace.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add initial abstractions for working with blk-mq.
This patch is a maintained, refactored subset of code originally published
by Wedson Almeida Filho <wedsonaf@gmail.com> [1].
[1] https://github.com/wedsonaf/linux/tree/f2cfd2fe0e2ca4e90994f96afe268bbd4382a891/rust/kernel/blk/mq.rs
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20240611114551.228679-2-nmi@metaspace.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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