Could you suggest something other instead of "oomkiller"?

> This feature could make it interesting to let readers and writers > tell each other things: Reserve some unused space in the reader > table slots for stuff the reader's caller could put there, and > some space for an impatient writer to leave a note. Could go > in an independent commit if there is any demand for it though. Communications between readers and writers may be interesting, but I think it is over-engineering in the LMDB context.