linux-kernel - Re: Multiple instances of devpts

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Message-ID: <48010DBD.6010903@zytor.com>
Date:	Sat, 12 Apr 2008 12:30:05 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Al Viro <viro@...IV.linux.org.uk>, sukadev@...ibm.com,
	Andrew Morton <akpm@...l.org>, serue@...ibm.com,
	matthltc@...ibm.com, Pavel Emelyanov <xemul@...nvz.org>,
	Containers <containers@...ts.osdl.org>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Multiple instances of devpts

H. Peter Anvin wrote:
> 
> Thinking about it further, allowing this restriction would also allow a 
> whole lot of cleanups inside the pty setup, since it would eliminate the 
> need to do a separate lookup to find the corresponding devpts entry in 
> pty_open().  The benefit here comes from the closer coupling between the 
> pty and the devpts filesystem and isn't at all related to namespaces, 
> but it's a very nice side benefit.
> 

Minor correction: the lookup is actually in init_dev() in tty_io.c; I'm 
specifically referring to devpts_get_tty().

	-hpa
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