Re: [PATCH 2/2] tty: rework pty count limiting

[Alan Cox]

> > That's a userspace api change, why is this going to be allowed?
> 
> open() can return -ENOSPC in case normal fs,
> meanwhile error codes for /dev/ptmx wasn't documented at all:
> there is nothing in manpage pts, pty and ptmx.
> manpage posix_openpt and getpt refers to manpage open(2).
> I can return EIO back, if this is critical.

I prefer the -ENOSPC change - its perfectly within POSIX and while its
vaguely an ABI change I don't believe its one that a single piece of
software actually cares about. So nothing will break (famous last words).

Lets try it and see.

Alan
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