From: Nivedita Singhvi <firstname.lastname@example.org>
Date: Thu, 5 Sep 2002 09:58:48 -0700
Doing zerocopy on the sendmsg() code path is nontrivial
and the end result is really sendfile().
Actually, it is important observation. All the people
who want zerocopy sengmsg() can just as well mmap() a private
file, write their user data to it and then ask kernel to
sendfile() the contents.
zerocopy sendmsg() is totally unnecessary and provides zero
new functionality to the user, just extra kernel complexity.
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