From: "H. Peter Anvin" <hpa@zytor.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: Zach Brown <zab@zabbo.net>, Pekka Enberg <penberg@cs.helsinki.fi>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
hch@lst.de
Subject: Re: [RFC/PATCH] revokeat/frevoke system calls V5
Date: Mon, 26 Feb 2007 10:46:21 -0800 [thread overview]
Message-ID: <45E32AFD.2050407@zytor.com> (raw)
In-Reply-To: <20070226194131.2c4e4a47@lxorguk.ukuu.org.uk>
Alan wrote:
>> I'm not sure. Turning, for example, the statat(dir_fd, name == NULL)
>> error case into fstat(dir_fd) sounds like a way for apps, admittedly
>> buggy ones, to be surprised. Maybe libc would be exptected to catch
>> the error before performing the shared system call?
>
> At that point would it not be cheaper to have two system calls, the table
> cost isn't very large.
It's not just the table, though, you need two entry points, but even
that isn't really all that big either, I guess.
-hpa
next prev parent reply other threads:[~2007-02-26 18:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-28 20:06 [RFC/PATCH] revokeat/frevoke system calls V5 Pekka J Enberg
2007-02-01 4:28 ` Serge E. Hallyn
2007-02-07 10:45 ` Jan Kara
2007-02-07 10:50 ` Pekka J Enberg
2007-02-07 11:05 ` Jan Kara
2007-02-26 0:33 ` Alan
2007-02-26 7:25 ` Pekka Enberg
2007-02-26 7:53 ` H. Peter Anvin
[not found] ` <79B7BBDC-E953-4EAE-8D32-E510DE0981FF@zabbo.net>
2007-02-26 19:41 ` Alan
2007-02-26 18:46 ` H. Peter Anvin [this message]
2007-02-26 21:36 ` Kyle Moffett
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