dbs-virtio-devices: add Madvise error type

We add Madvise error type to expose error when setting madvise on guest memory region. Fixes: #285 Signed-off-by: Helin Guo <helinguo@linux.alibaba.com>
openanolis · May 30, 2023 · 21838b7 · 21838b7
1 parent 8a6d318
commit 21838b7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crates/dbs-virtio-devices/src/lib.rs b/crates/dbs-virtio-devices/src/lib.rs
@@ -180,6 +180,9 @@ pub enum Error {
     /// Inserting mmap region failed.
     #[error("inserting mmap region failed: {0}")]
     InsertMmap(vm_memory::mmap::Error),
+    /// Failed to set madvise on guest memory region.
+    #[error("failed to set madvice() on guest memory region")]
+    Madvise(#[source] nix::Error),
 
     #[cfg(feature = "virtio-vsock")]
     #[error("virtio-vsock error: {0}")]