rpc: Allow xdr_buf_subsegment to operate in-place
Allow
xdr_buf_subsegment(&buf, &buf, base, len)
to modify an xdr_buf in-place.
Also, none of the callers need the iov_base of head or tail to be zeroed
out.
Also add documentation.
(As it turns out, I'm not really using this new guarantee, but it seems
a simple way to make this function a bit more robust.)
Signed-off-by:
J. Bruce Fields <bfields@redhat.com>
parent
3f42d2c4
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