Questions about the tcp code in 2.4.9

[chuckw@xxxxxxxx]

Hello All,
        I have 2 questions.  They may seem stupid, but the guys over at 
kernelnewbies said
you guys would know the answers to these.
        1)  on line 1054 of tcp.c it seems that the sock buffer is being added 
to the 
            front of the write queue. 
                                If my observation is correct ? why : what is 
happening

        2)  when an iovec is written to the sock buffer, it looks like the 
whole iovec
            is written into the same sock buffer.  Is that correct?

Thanks in advance,
Chuck