On 2020/11/24 19:52, Christoph Hellwig wrote: > On Tue, Nov 24, 2020 at 06:45:31PM +0800, Zhen Lei wrote: >> krealloc() does the free operation when the parameter new_size is 0, with >> ZERO_SIZE_PTR returned. Because all other places use NULL to check whether >> if_data is available or not, so covert it from ZERO_SIZE_PTR to NULL. > > This new code looks much harder to read than the version it replaced. OK > >