Alan Cox wrote:
> On Mon, 2002-07-22 at 15:08, Marcin Dalecki wrote:
> 
>>- It is fixing completely confused wild casting to 32 bits.
>>
>>- Actually adding a comment explaining the obscure code, which is
>>   relying on integer arithmetics overflow.
> 
> 
> Better yet take the code from 2.4.19-rc3. The code you fixed up is still
> wrong. Sincie iov_len is not permitted to exceed 2Gb (SuS v3, found by
> the LSB test suite) the actual fix turns out to be even simpler and
> cleaner than the one you did

You are right. It makes sese, since readv and writev are
supposed to return ssize_t. Fixed patch version attached.