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0ddceba270
Add UserSliceWriter::write_slice_file(), which is the same as UserSliceWriter::write_slice_partial() but updates the given file::Offset by the number of bytes written. This is equivalent to C's `simple_read_from_buffer()` and useful when dealing with file offsets from file operations. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Miguel Ojeda <ojeda@kernel.org> [ Replace saturating_add() with the raw operator and a corresponding OVERFLOW comment. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org>