andrey/rCore-Tutorial-v3
1
0
Fork 0
mirror of https://github.com/rcore-os/rCore-Tutorial-v3.git synced 2024-11-22 01:16:26 +04:00
Code Issues Projects Releases Wiki Activity

Fix #79.

Browse Source
This commit is contained in:
Yifan Wu 2022-05-27 23:42:53 -07:00
parent 5a362ba7cd
commit bb9b32be61
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
easy-fs/src/block_cache.rs
View File

@ -1,11 +1,13 @@
use super::{BlockDevice, BLOCK_SZ};
use alloc::collections::VecDeque;
use alloc::sync::Arc;
use alloc::vec;
use alloc::vec::Vec;
use lazy_static::*;
use spin::Mutex;
pub struct BlockCache {
cache: [u8; BLOCK_SZ],
cache: Vec<u8>,
block_id: usize,
block_device: Arc<dyn BlockDevice>,
modified: bool,
@ -14,7 +16,8 @@ pub struct BlockCache {
impl BlockCache {
/// Load a new BlockCache from disk.
pub fn new(block_id: usize, block_device: Arc<dyn BlockDevice>) -> Self {
let mut cache = [0u8; BLOCK_SZ];
// for alignment and move effciency
let mut cache = vec![0u8; BLOCK_SZ];
block_device.read_block(block_id, &mut cache);
Self {
cache,