Method new

easy-fs/src/block_cache.rs:18–28

Load a new BlockCache from disk.

(block_id: usize, block_device: Arc<dyn BlockDevice>)

impl BlockCache {
    /// Load a new BlockCache from disk.
    pub fn new(block_id: usize, block_device: Arc<dyn BlockDevice>) -> Self {
        // for alignment and move effciency
        let mut cache = vec![0u8; BLOCK_SZ];
        block_device.read_block(block_id, &mut cache);
        Self {
            cache,
            block_id,
            block_device,
            modified: false,
        }
    }

    fn addr_of_offset(&self, offset: usize) -> usize {
        &self.cache[offset] as *const _ as usize