From: Scott Wood <scottwood@freescale.com>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Timur Tabi <timur@freescale.com>, <alan@lxorguk.ukuu.org.uk>,
<linux-kernel@vger.kernel.org>, <akpm@linux-foundation.org>
Subject: Re: [PATCH] lib: introduce strdup_from_user
Date: Fri, 3 Jun 2011 13:53:03 -0500 [thread overview]
Message-ID: <20110603135303.0800e4a7@schlenkerla.am.freescale.net> (raw)
In-Reply-To: <BANLkTinqQS11nXQAJBMSvCrp4tOtCg5Qww@mail.gmail.com>
On Fri, 3 Jun 2011 21:39:28 +0300
Alexey Dobriyan <adobriyan@gmail.com> wrote:
> On Fri, Jun 3, 2011 at 9:34 PM, Timur Tabi <timur@freescale.com> wrote:
> > Would it be better if I did this:
>
> The point is data should cross kernelspace/userspace boundary only once.
>
Why does it matter, as long as it doesn't hurt the kernel if userspace
plays games (i.e. take care of the NUL termination), and it's not a
performance problem?
-Scott
next prev parent reply other threads:[~2011-06-03 19:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-03 16:45 Timur Tabi
2011-06-03 17:45 ` Alexey Dobriyan
2011-06-03 18:22 ` Timur Tabi
2011-06-03 18:26 ` Alexey Dobriyan
2011-06-03 18:34 ` Timur Tabi
2011-06-03 18:39 ` Alexey Dobriyan
2011-06-03 18:41 ` Timur Tabi
2011-06-03 18:47 ` Alexey Dobriyan
2011-06-03 18:54 ` Timur Tabi
2011-06-03 18:53 ` Scott Wood [this message]
2011-06-03 18:57 ` Timur Tabi
2011-06-03 19:12 ` Alexey Dobriyan
2011-06-03 19:31 ` Scott Wood
2011-06-03 22:41 ` Al Viro
2011-06-03 18:37 ` Scott Wood
2011-06-03 21:58 ` Alan Cox
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