diff options
Diffstat (limited to 'qcow')
-rw-r--r-- | qcow/src/qcow_raw_file.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/qcow/src/qcow_raw_file.rs b/qcow/src/qcow_raw_file.rs index c178b3c..7d97b78 100644 --- a/qcow/src/qcow_raw_file.rs +++ b/qcow/src/qcow_raw_file.rs @@ -66,7 +66,7 @@ impl QcowRawFile { non_zero_flags: u64, ) -> io::Result<()> { self.file.seek(SeekFrom::Start(offset))?; - let mut buffer = BufWriter::new(&self.file); + let mut buffer = BufWriter::with_capacity(table.len() * size_of::<u64>(), &self.file); for addr in table { let val = if *addr == 0 { 0 @@ -91,7 +91,7 @@ impl QcowRawFile { /// Writes a refcount block to the file. pub fn write_refcount_block(&mut self, offset: u64, table: &[u16]) -> io::Result<()> { self.file.seek(SeekFrom::Start(offset))?; - let mut buffer = BufWriter::new(&self.file); + let mut buffer = BufWriter::with_capacity(table.len() * size_of::<u16>(), &self.file); for count in table { buffer.write_u16::<BigEndian>(*count)?; } |