linux-kernel - Re: linux-next: Tree for December 9

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Message-ID: <ac3eb2510812091736i36b47be2s59fe1a1ac6123398@mail.gmail.com>
Date:	Wed, 10 Dec 2008 02:36:42 +0100
From:	"Kay Sievers" <kay.sievers@...y.org>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, adobriyan@...il.com,
	Greg <greg@...ah.com>, NeilBrown <neilb@...e.de>
Subject: Re: linux-next: Tree for December 9

On Wed, Dec 10, 2008 at 02:30, Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Wed, 10 Dec 2008 01:31:13 +0100 "Kay Sievers" <kay.sievers@...y.org> wrote:
>
>> > akpm2:/home/akpm# udevmonitor
>> > udevmonitor prints the received event from the kernel [UEVENT]
>> > and the event which udev sends out after rule processing [UDEV]
>> >
>> > UDEV  [1228867146.103334] add@...ass/bdi/9:0
>> > UDEV  [1228867146.107566] remove@...ock/md0
>> > UDEV  [1228867146.111969] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.119889] add@...ock/md0
>> > UEVENT[1228867146.119964] add@...ass/bdi/9:0
>> > UEVENT[1228867146.120162] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.120205] remove@...ock/md0
>> > UDEV  [1228867146.122839] add@...ock/md0
>> > UDEV  [1228867146.129125] add@...ass/bdi/9:0
>> > UDEV  [1228867146.133459] remove@...ock/md0
>> > UDEV  [1228867146.137813] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.145652] add@...ock/md0
>>
>> Weird loop, something is accessing /dev/md0, i guess, which creates
>> the kernel device, and the event, which accesses /dev/md0 again and it
>> goes crazy. Maybe caused by changes Neil did.
>
> I knew an Australian was to blame - it's just a matter of determining
> which one.

I added him alredy to Cc: with the last mail. :)

I guess it's something like this:
  http://neil.brown.name/git?p=md;a=commitdiff;h=6ac9b8824fd2f82fff508eecc5c74cf797e93cb2

I really hope we can fix that change, as we want to have proper
lifetime rules like this, where the devices, which are not used, do
not show up.

>> Do you use md devices on that box?
>
> Nope.

Fine.

Kay
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