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[beta] limit chunk size for copy_file_range to 1GB per iteration #79007

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[beta] limit chunk size for copy_file_range to 1GB per iteration #79007

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2 changes: 1 addition & 1 deletion library/std/src/sys/unix/fs.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1147,7 +1147,7 @@ pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
let mut written = 0u64;
while written < max_len {
let copy_result = if has_copy_file_range {
let bytes_to_copy = cmp::min(max_len - written, usize::MAX as u64) as usize;
let bytes_to_copy = cmp::min(max_len - written, 0x4000_0000 as u64) as usize;
let copy_result = unsafe {
// We actually don't have to adjust the offsets,
// because copy_file_range adjusts the file offset automatically
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