Remove as_device from FileLike

kernel/src/fs/file_handle.rs

@@ -5,10 +5,7 @@
 //! Opened File Handle
 
 use crate::{
-    fs::{
-        device::Device,
-        utils::{AccessMode, FallocMode, InodeMode, IoctlCmd, Metadata, SeekFrom, StatusFlags},
-    },
+    fs::utils::{AccessMode, FallocMode, InodeMode, IoctlCmd, Metadata, SeekFrom, StatusFlags},
     net::socket::Socket,
     prelude::*,
     process::{signal::Pollable, Gid, Uid},
@@ -103,10 +100,6 @@ pub trait FileLike: Pollable + Send + Sync + Any {
     fn as_socket(self: Arc<Self>) -> Option<Arc<dyn Socket>> {
         None
     }
-
-    fn as_device(&self) -> Option<Arc<dyn Device>> {
-        None
-    }
 }
 
 impl dyn FileLike {

kernel/src/fs/inode_handle/dyn_cap.rs

@@ -134,8 +134,4 @@ impl FileLike for InodeHandle<Rights> {
         }
         self.0.fallocate(mode, offset, len)
     }
-
-    fn as_device(&self) -> Option<Arc<dyn Device>> {
-        self.dentry().inode().as_device()
-    }
 }

kernel/src/fs/inode_handle/mod.rs

@@ -15,7 +15,6 @@ use inherit_methods_macro::inherit_methods;
 use crate::{
     events::IoEvents,
     fs::{
-        device::Device,
         file_handle::FileLike,
         path::Dentry,
         utils::{