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-rw-r--r--drivers/block/rnull.rs80
1 files changed, 0 insertions, 80 deletions
diff --git a/drivers/block/rnull.rs b/drivers/block/rnull.rs
deleted file mode 100644
index d07e76ae2c13..000000000000
--- a/drivers/block/rnull.rs
+++ /dev/null
@@ -1,80 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-//! This is a Rust implementation of the C null block driver.
-//!
-//! Supported features:
-//!
-//! - blk-mq interface
-//! - direct completion
-//! - block size 4k
-//!
-//! The driver is not configurable.
-
-use kernel::{
- alloc::flags,
- block::mq::{
- self,
- gen_disk::{self, GenDisk},
- Operations, TagSet,
- },
- error::Result,
- new_mutex, pr_info,
- prelude::*,
- sync::{Arc, Mutex},
- types::ARef,
-};
-
-module! {
- type: NullBlkModule,
- name: "rnull_mod",
- authors: ["Andreas Hindborg"],
- description: "Rust implementation of the C null block driver",
- license: "GPL v2",
-}
-
-#[pin_data]
-struct NullBlkModule {
- #[pin]
- _disk: Mutex<GenDisk<NullBlkDevice>>,
-}
-
-impl kernel::InPlaceModule for NullBlkModule {
- fn init(_module: &'static ThisModule) -> impl PinInit<Self, Error> {
- pr_info!("Rust null_blk loaded\n");
-
- // Use a immediately-called closure as a stable `try` block
- let disk = /* try */ (|| {
- let tagset = Arc::pin_init(TagSet::new(1, 256, 1), flags::GFP_KERNEL)?;
-
- gen_disk::GenDiskBuilder::new()
- .capacity_sectors(4096 << 11)
- .logical_block_size(4096)?
- .physical_block_size(4096)?
- .rotational(false)
- .build(format_args!("rnullb{}", 0), tagset)
- })();
-
- try_pin_init!(Self {
- _disk <- new_mutex!(disk?, "nullb:disk"),
- })
- }
-}
-
-struct NullBlkDevice;
-
-#[vtable]
-impl Operations for NullBlkDevice {
- #[inline(always)]
- fn queue_rq(rq: ARef<mq::Request<Self>>, _is_last: bool) -> Result {
- mq::Request::end_ok(rq)
- .map_err(|_e| kernel::error::code::EIO)
- // We take no refcounts on the request, so we expect to be able to
- // end the request. The request reference must be unique at this
- // point, and so `end_ok` cannot fail.
- .expect("Fatal error - expected to be able to end request");
-
- Ok(())
- }
-
- fn commit_rqs() {}
-}