Regarding apr_file_writev() and locking...

[Bojan Smojver]

At present, we have in this function:

if (thefile->buffered) {
  flush
  adjust various buffer offsets
}

If two threads do this for the same file (i.e. apr_file_t*), offsets may
end up screwed. Shouldn't we surround this with lock/unlock, like we do
in apr_file_write()?

PS. Also, I think we can do this only for HAVE_WRITEV as in the other
case apr_file_write() will take care of the whole thing (i.e. that
function already has a buffered path).

-- 
Bojan