From: Andrew Morton <akpm@linux-foundation.org>
To: Matt Mackall <mpm@selenic.com>,
rlove@rlove.org, linux-kernel@vger.kernel.org,
Ingo Molnar <mingo@elte.hu>, Dmitry Torokhov <dtor@mail.ru>
Subject: Re: 2.6.21-mm2: HDAPS? BUG: at kernel/mutex.c:311
Date: Fri, 11 May 2007 18:17:56 -0700 [thread overview]
Message-ID: <20070511181756.fa3762a1.akpm@linux-foundation.org> (raw)
In-Reply-To: <20070511175335.092aa0af.akpm@linux-foundation.org>
On Fri, 11 May 2007 17:53:35 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:
> And indeed that's buggy - the non-debug version of spin_lock_mutex() is not
> irq-safe.
>
> I'd say that's pretty dumb of the mutex interface, really. Doing a
> mutex_trylock() should be OK from all contexts.
We can fix this in a low-impact fashion by making mutex_trylock() do a
spin_trylock() on mutex->wait_lock, no?
next prev parent reply other threads:[~2007-05-12 1:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-12 0:21 2.6.21-mm2: HDAPS? BUG: at kernel/mutex.c:311 Matt Mackall
2007-05-12 0:53 ` Andrew Morton
2007-05-12 1:17 ` Andrew Morton [this message]
2007-05-12 5:12 ` Dmitry Torokhov
2007-05-12 5:45 ` Satyam Sharma
2007-05-14 2:57 ` Dmitry Torokhov
2007-05-14 3:40 ` Satyam Sharma
2007-05-26 20:43 ` Cédric Augonnet
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