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vmm: Simplify some of the io_uring code

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Small patch creating a dedicated `block_io_uring_is_supported()`
function for the non-io_uring case, so that we can simplify the
code in the DeviceManager.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2020-10-07 11:23:20 +02:00
parent ac32b1e35f
commit 1e3a6cb450
3 changed files with 33 additions and 59 deletions
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12
block_util/src/lib.rs
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@@ -14,13 +14,15 @@ extern crate log;
extern crate serde_derive;
#[cfg(feature = "io_uring")]
use io_uring::{opcode, squeue, IoUring, Probe};
use io_uring::Probe;
use io_uring::{opcode, squeue, IoUring};
use serde::ser::{Serialize, SerializeStruct, Serializer};
use std::cmp;
use std::io::{self, Read, Seek, SeekFrom, Write};
use std::os::linux::fs::MetadataExt;
#[cfg(feature = "io_uring")]
use std::os::unix::io::{AsRawFd, RawFd};
use std::os::unix::io::AsRawFd;
use std::os::unix::io::RawFd;
use std::path::PathBuf;
use std::result;
use virtio_bindings::bindings::virtio_blk::*;
@@ -266,7 +268,6 @@ impl Request {
Ok(len)
}
#[cfg(feature = "io_uring")]
pub fn execute_io_uring(
&self,
mem: &GuestMemoryMmap,
@@ -565,3 +566,8 @@ pub fn block_io_uring_is_supported() -> bool {
true
}
#[cfg(not(feature = "io_uring"))]
pub fn block_io_uring_is_supported() -> bool {
false
}