Method as_aligned_slice

nodedb-wal/src/align.rs:118–123

Get the written portion padded up to the next alignment boundary. O_DIRECT requires the I/O size to be a multiple of the block size. The padding bytes are zeroed (from `alloc_zeroed`).

(&self)

    /// O_DIRECT requires the I/O size to be a multiple of the block size.
    /// The padding bytes are zeroed (from `alloc_zeroed`).
    pub fn as_aligned_slice(&self) -> &[u8] {
        let aligned_len = round_up(self.len, self.alignment);
        let actual_len = aligned_len.min(self.capacity);
        // SAFETY: ptr is valid for `capacity` bytes, and actual_len <= capacity.
        unsafe { std::slice::from_raw_parts(self.ptr, actual_len) }
    }

    /// Reset the buffer for reuse without deallocating.
    pub fn clear(&mut self) {