On 2024/7/30 23:12, Alexander H Duyck wrote: ... >> } >> >> nc->pagecnt_bias--; >> nc->remaining = remaining - fragsz; >> >> return encoded_page_address(encoded_va) + >> (page_frag_cache_page_size(encoded_va) - remaining); > > Parenthesis here shouldn't be needed, addition and subtractions > operations can happen in any order with the result coming out the same. I am playing safe to avoid overflow here, as I am not sure if the allocator will give us the last page. For example, '0xfffffffffffff000 + 0x1000' will have a overflow.
