sosend returning ERESTART

[Colin Percival]

I think I've tracked an NFS problem down to sosend returning ERESTART; it
looks like it's easy to work around this, but I'm not sure *why* sosend is
returning ERESTART... or for that matter *how* since I can't find anywhere
in relevant code where that gets returned.

Am I missing something obvious?  In case it matters, this is NFS making use
of RPC code, sosending over a TCP connection which goes out over an ixv
interface.

-- 
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid