[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <201001162353.45800.agruen@suse.de>
Date: Sat, 16 Jan 2010 23:53:45 +0100
From: Andreas Gruenbacher <agruen@...e.de>
To: Matt Helsley <matthltc@...ibm.com>
Cc: Matthew Helsley <matt.helsley@...il.com>,
Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
hch@...radead.org, containers@...ts.linux-foundation.org,
Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 2/4] fanotify: Add pids to events
On Friday 15 January 2010 10:21:46 pm Matt Helsley wrote:
> On Fri, Jan 15, 2010 at 04:12:09PM +0100, Andreas Gruenbacher wrote:
> > > 2. If the event recipient does a clone and enters a new pidns the pid
> > > number will be incorrect without any indication.
> >
> > No, if a process has a pid within the listener's namespace the listener
> > will see this pid; otherwise, the resulting pid value is 0.
>
> So the pid reference is resolved at read(), correct? If so then that's
> fine. (Otherwise I'd think the values could still become stale).
Yes. Note that for non-blocking events, there is no guarantee that the
triggering process still runs when the event is consumed though.
Andreas
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists