linux-kernel - Re: [PATCH 3/6] [-mm] epoll: remember the event if epoll

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Message-ID: <alpine.DEB.2.00.0902260834150.31638@alien.or.mcafeemobile.com>
Date:	Thu, 26 Feb 2009 08:36:19 -0800 (PST)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Tony Battersby <tonyb@...ernetics.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jonathan Corbet <corbet@....net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/6] [-mm] epoll: remember the event if epoll_wait returns
 -EFAULT

On Tue, 24 Feb 2009, Tony Battersby wrote:

> If epoll_wait returns -EFAULT, the event that was being returned when
> the fault was encountered will be forgotten.  This is not a big deal
> since EFAULT will happen only if a buggy userspace program passes in a
> bad address, in which case what happens later usually doesn't matter.
> However, it is easy to remember the event for later, and this patch
> makes a simple change to do that.

It doesn't really matter with an EFAULT coming, anyway ...

Acked-by: Davide Libenzi <davidel@...ilserver.org>


- Davide


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