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fix clippy warning casting u64 to usize #4604

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2 changes: 1 addition & 1 deletion src/firecracker/examples/uffd/uffd_utils.rs
Original file line number Diff line number Diff line change
Expand Up @@ -182,7 +182,7 @@ impl Runtime {
let file_meta = backing_file
.metadata()
.expect("can not get backing file metadata");
let backing_memory_size = file_meta.len() as usize;
let backing_memory_size = usize::try_from(file_meta.len());
// # Safety:
// File size and fd are valid
let ret = unsafe {
Expand Down