From 0c77f012c650d31800c5d628295cbdd928eb8eb7 Mon Sep 17 00:00:00 2001 From: Andreas Hindborg Date: Wed, 27 May 2026 11:18:09 +0200 Subject: [PATCH] rust: block: mq: align init_request numa_node arg with C signature Commit b040a1a4523d ("block: switch numa_node to int in blk_mq_hw_ctx and init_request") changed the type of the `numa_node` argument of `blk_mq_ops::init_request` from `unsigned int` to `int`. Update the Rust callback signature to match, so that the function item can be coerced to the C fn pointer type stored in `blk_mq_ops`. Without this change the Rust block layer fails to build: error[E0308]: mismatched types --> rust/kernel/block/mq/operations.rs:274:28 | 274 | init_request: Some(Self::init_request_callback), | ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | expected fn pointer, found fn item | = note: expected fn pointer `unsafe extern "C" fn(_, _, _, i32) -> _` found fn item `unsafe extern "C" fn(_, _, _, u32) -> _ {...}` The argument is unused on the Rust side, so this is a pure type-signature change with no functional impact. Fixes: b040a1a4523d ("block: switch numa_node to int in blk_mq_hw_ctx and init_request") Signed-off-by: Andreas Hindborg Reviewed-by: Gary Guo --- rust/kernel/block/mq/operations.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rust/kernel/block/mq/operations.rs b/rust/kernel/block/mq/operations.rs index 8ad46129a52c4..861903e18fbfa 100644 --- a/rust/kernel/block/mq/operations.rs +++ b/rust/kernel/block/mq/operations.rs @@ -218,7 +218,7 @@ impl OperationsVTable { _set: *mut bindings::blk_mq_tag_set, rq: *mut bindings::request, _hctx_idx: crate::ffi::c_uint, - _numa_node: crate::ffi::c_uint, + _numa_node: crate::ffi::c_int, ) -> crate::ffi::c_int { from_result(|| { // SAFETY: By the safety requirements of this function, `rq` points