linux-kernel - Re: [RFC PATCH 0/2 v1] Ioctl for reading block queue information

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Date:	Fri, 10 Dec 2010 18:51:10 +0100
From:	Kay Sievers <kay.sievers@...y.org>
To:	Lukas Czerner <lczerner@...hat.com>
Cc:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Greg KH <gregkh@...e.de>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, tytso@....edu, sandeen@...hat.com,
	hch@...radead.org, axboe@...nel.dk
Subject: Re: [RFC PATCH 0/2 v1] Ioctl for reading block queue information

On Fri, Dec 10, 2010 at 15:07, Lukas Czerner <lczerner@...hat.com> wrote:
> On Thu, 9 Dec 2010, Andreas Dilger wrote:
>
>> On 2010-12-09, at 12:20, Greg KH wrote:
>> > On Thu, Dec 09, 2010 at 04:25:35PM +0100, Lukas Czerner wrote:
>> >> For a long time it has been pretty painful to retrieve informations from
>> >> /sys/block/*/queue for particular block device. Not only it is painful
>> >> to retrieve informations within C tool, parsing strings, etc, but one
>> >> have to run into problem even finding the proper path in sysfs.
>> >
>> > What's wrong with using libudev?  That should give you all of this
>> > information easily using a .c program without any need to change the
>> > kernel at all.
>
> What's wrong with using libudev ? Well, fist of all I have never heard
> about it:), one can argue this is kind of my fault, and second of all
> the documentation is kind of non-existent (almost).

What else do you need?
  http://www.kernel.org/pub/linux/utils/kernel/hotplug/libudev/

Let me know, we can add it.

Thanks,
Kay
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