From: Andrew Morton <akpm@linux-foundation.org>
To: Alexey Dobriyan <adobriyan@sw.ru>
Cc: linux-kernel@vger.kernel.org, haveblue@us.ibm.com
Subject: Re: 2.6.23-rc7-mm1: r/o mounts joke with lockdep
Date: Mon, 24 Sep 2007 09:26:58 -0700 [thread overview]
Message-ID: <20070924092658.91c17511.akpm@linux-foundation.org> (raw)
In-Reply-To: <20070924095105.GD6757@localhost.sw.ru>
On Mon, 24 Sep 2007 13:51:05 +0400 Alexey Dobriyan <adobriyan@sw.ru> wrote:
> static void lock_and_coalesce_cpu_mnt_writer_counts(void)
> {
> int cpu;
> struct mnt_writer *cpu_writer;
>
> for_each_possible_cpu(cpu) {
> cpu_writer = &per_cpu(mnt_writers, cpu);
> spin_lock_nested(&cpu_writer->lock, 42);
> ^^^^
>
> What the heck is going on?
that was some random 2:00AM hack by me to make the warnings go away.
> Given that MAX_LOCKDEP_SUBCLASSES is only 8,
> this reliably turns off lockdep at boot.
that explains why it worked so well.
next prev parent reply other threads:[~2007-09-24 16:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-24 9:51 2.6.23-rc7-mm1: r/o mounts joke with lockdep Alexey Dobriyan
2007-09-24 16:26 ` Andrew Morton [this message]
2007-09-24 16:33 ` Dave Hansen
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