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Add support for parsing boolean module parameters in the Rust module! macro. Currently, only integer types are supported by the `module_param!` macros. This patch implements the `ModuleParam` trait for `bool` by delegating the string parsing to the existing C implementation via `kstrtobool_bytes()`. It also wires up `PARAM_OPS_BOOL` so that the Rust parameter system correctly links to the C `param_ops_bool` structure. For demonstration and verification, a boolean parameter is added to `samples/rust/rust_minimal.rs`. Support for boolean parameters will initially be used by the Rust null block driver [1]. Link: https://lore.kernel.org/all/20260609-rnull-v6-19-rc5-send-v2-4-82c7404542e2@kernel.org/ [1] Assisted-by: Codex:GPT-5 Signed-off-by: Wenzhao Liao <wenzhaoliao@ruc.edu.cn> Tested-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/linux-modules/20260411130254.3510128-1-wenzhaoliao@ruc.edu.cn/ [ppavlu: add motivation to the commit message and rebase the patch] Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>