From: Peter Zijlstra <peterz@infradead.org>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Matti Linnanvuori <mattilinn@gmail.com>,
Randy Dunlap <randy.dunlap@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org
Subject: Re: [patch] doc: add a chapter about trylock functions [Bug 9011]
Date: Fri, 16 May 2008 14:21:25 +0200 [thread overview]
Message-ID: <1210940485.7886.29.camel@twins> (raw)
In-Reply-To: <200805151030.18959.rusty@rustcorp.com.au>
On Thu, 2008-05-15 at 10:30 +1000, Rusty Russell wrote:
> On Wednesday 14 May 2008 01:31:47 Matti Linnanvuori wrote:
> > + <function>mutex_trylock()</function> does not suspend your task
> > + but returns non-zero if it could lock the mutex on the first try
> > + or 0 if not. This function cannot be safely used in hardware or
> > + software interrupt contexts despite not sleeping.
>
> I know this is what the documentation says, but I can't see why. Ingo?
because who would then own the lock?
next prev parent reply other threads:[~2008-05-16 12:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <ca0148c30805130831h11fe0ca0qf501bd07d1141940@mail.gmail.com>
2008-05-15 0:30 ` [patch] doc: add a chapter about trylock functions [Bug 9011] Rusty Russell
2008-05-16 12:21 ` Peter Zijlstra [this message]
2008-05-04 7:32 Matti Linnanvuori
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