From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Igor Zhbanov <izh1979@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Idea: Feature information / extensions dispatcher syscall.
Date: Wed, 22 Apr 2009 16:33:36 +0100 [thread overview]
Message-ID: <20090422163336.2054409b@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <f44001920904220822k672def82t7e9ba646bdde5fe8@mail.gmail.com>
> Yes, you need a file handle. To open device each time you need to make ioctl
> is expensive and keeping device opened may prevent unmounting /proc
> that could be a problem in some installations if that application is used
> at a boot time.
- Nobody in the real world unmounts /proc.
- You don't need to use /proc anyway
- You don't need to open the device each ioctl
- Even if you did open is extremely quick
next prev parent reply other threads:[~2009-04-22 15:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 14:12 Igor Zhbanov
2009-04-22 14:18 ` Andi Kleen
[not found] ` <f44001920904220732h2d6d18cfwef53af31bb218b87@mail.gmail.com>
2009-04-22 14:46 ` Igor Zhbanov
2009-04-22 15:12 ` Alan Cox
2009-04-22 15:22 ` Igor Zhbanov
2009-04-22 15:33 ` Alan Cox [this message]
2009-04-22 14:48 ` Igor Zhbanov
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