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block: raw: Remove EOPNOTSUPP skip from test_write_zeroes

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The WriteZeroesAt fallback means write_zeroes no longer fails on
filesystems that lack fallocate support. The skip is now dead
code.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-07-17 16:13:25 +02:00
committed by Rob Bradford
parent d7a7d73622
commit 028c99b39c
1 changed files with 3 additions and 14 deletions
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17
block/src/formats/raw/tests.rs
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@@ -13,7 +13,7 @@
use std::fs::File;
use std::io::{Read, Seek, SeekFrom, Write};
use crate::async_io::{AsyncIo, AsyncIoError};
use crate::async_io::AsyncIo;
fn next_completion(async_io: &mut dyn AsyncIo) -> (u64, i32) {
let completion = async_io.next_completed_request().expect("No completion");
@@ -67,8 +67,7 @@ pub fn test_punch_hole(async_io: &mut dyn AsyncIo, file: &mut File) {
}
/// Tests writing zeroes to a 512 KB region inside a 4 MB file and verifying
/// surrounding data is preserved. Gracefully skips when the filesystem does
/// not support `FALLOC_FL_ZERO_RANGE`.
/// surrounding data is preserved.
pub fn test_write_zeroes(async_io: &mut dyn AsyncIo, file: &mut File) {
// Write 4MB of data
let data = vec![0xBB; 4 * 1024 * 1024];
@@ -78,17 +77,7 @@ pub fn test_write_zeroes(async_io: &mut dyn AsyncIo, file: &mut File) {
// Write zeros in the middle (512KB at offset 2MB)
let offset = 2 * 1024 * 1024;
let length = 512 * 1024;
let write_zeroes_result = async_io.write_zeroes(offset, length, 2);
// FALLOC_FL_ZERO_RANGE might not be supported on all filesystems (e.g., tmpfs)
// If it fails with ENOTSUP, skip the test
if let Err(AsyncIoError::WriteZeroes(ref e)) = write_zeroes_result
&& (e.raw_os_error() == Some(libc::EOPNOTSUPP) || e.raw_os_error() == Some(libc::ENOTSUP))
{
eprintln!("Skipping test_write_zeroes: filesystem doesn't support FALLOC_FL_ZERO_RANGE");
return;
}
write_zeroes_result.unwrap();
async_io.write_zeroes(offset, length, 2).unwrap();
// Check completion
let (user_data, result) = next_completion(async_io);