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    SubjectRe: [RFC PATCH 0/2 v1] Ioctl for reading block queue information
    On Fri, 10 Dec 2010, Kay Sievers wrote:

    > On Fri, Dec 10, 2010 at 15:07, Lukas Czerner <lczerner@redhat.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
    >

    Well, this is not really documentation right, but rather reference
    manual. But I found this

    http://www.signal11.us/oss/udev/

    as a good way to start with.

    Thanks!

    -Lukas
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