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misc: use prelude size_of

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size_of is part of std::prelude as of Rust 1.80 (with size_of_val,
align_of, align_of_val), and the workspace MSRV is 1.89, so qualifying
it (mem::size_of, std::mem::size_of, core::mem::size_of) is unnecessary.

Convert every qualified size_of call-site to the bare prelude form and
drop the now-redundant `use std::mem::size_of;` imports, keeping
`use std::mem;` where it still serves non-prelude items (transmute,
swap, replace, take, zeroed, MaybeUninit, offset_of). size_of is the
only one of the four currently used in the tree.

Pure refactor, no behavioural change. Follow-up to the
clippy::absolute_paths cleanup (#7670), as discussed in #8444.

Signed-off-by: Henry Hrvoje Tonkovac <htonkovac@gmail.com>
Assisted-by: Claude:Opus-4.8
This commit is contained in:
Henry Hrvoje Tonkovac
2026-06-24 21:18:18 +02:00
committed by Bo Chen
parent f56fa3a865
commit f720e619c1
49 changed files with 158 additions and 228 deletions
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4
block/src/io/request.rs
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@@ -41,7 +41,7 @@ pub const SECTOR_SIZE: u64 = 0x01 << SECTOR_SHIFT;
/// Maximum number of segments per DISCARD or WRITE_ZEROES request.
pub const MAX_DISCARD_WRITE_ZEROES_SEG: u32 = 1;
/// Size and field offsets within `struct virtio_blk_discard_write_zeroes`.
const DISCARD_WZ_SEG_SIZE: u32 = mem::size_of::<virtio_blk_discard_write_zeroes>() as u32;
const DISCARD_WZ_SEG_SIZE: u32 = size_of::<virtio_blk_discard_write_zeroes>() as u32;
const DISCARD_WZ_MAX_PAYLOAD: u32 = DISCARD_WZ_SEG_SIZE * MAX_DISCARD_WRITE_ZEROES_SEG;
const DISCARD_WZ_SECTOR_OFFSET: u64 =
mem::offset_of!(virtio_blk_discard_write_zeroes, sector) as u64;
@@ -504,7 +504,7 @@ impl Request {
for &(data_addr, data_len) in &self.data_descriptors {
let _: u32 = data_len;
const _: () = assert!(
mem::size_of::<u32>() <= mem::size_of::<usize>(),
size_of::<u32>() <= size_of::<usize>(),
"unsupported platform"
);
if data_len == 0 {