From: Andrew Morton <akpm@linux-foundation.org>
To: "Jakub W. Jozwicki" <jozwicki@aster.pl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.25.10 1/2] libata: fix locking for kmap_atomic
Date: Sun, 13 Jul 2008 01:26:30 -0700 [thread overview]
Message-ID: <20080713012630.d5e522f7.akpm@linux-foundation.org> (raw)
In-Reply-To: <200807130127.36706.jozwicki@aster.pl>
On Sun, 13 Jul 2008 01:27:36 +0200 "Jakub W. Jozwicki" <jozwicki@aster.pl> wrote:
> Change locking surrounding kmap_atomic from local_irqsave to
> local_irqsave_nort. This fixes issues with PREEMPT_RT.
>
I assume this is a -rt kernel patch.
>
> --- linux-2.6.25.10/drivers/ata/libata-core.c 2008-07-03 05:46:47.000000000
> +0200
> +++ linux-2.6.25.10-rt7/drivers/ata/libata-core.c 2008-07-12
> 23:59:33.132140258 +0200
> @@ -5157,14 +5157,14 @@
> unsigned long flags;
>
> /* FIXME: use a bounce buffer */
> - local_irq_save(flags);
> + local_irq_save_nort(flags);
eww. If we're going to have to do stuff like this in mainline then
there might be a revolt.
next prev parent reply other threads:[~2008-07-13 8:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-12 23:27 [PATCH 2.6.25.10 1/2] libata: fix locking for kmap_atomic Jakub W. Jozwicki
2008-07-13 8:26 ` Andrew Morton [this message]
2008-07-13 13:17 ` Jakub W. Jozwicki
2008-07-13 17:46 ` Jeremy Fitzhardinge
2008-07-13 18:53 ` Jakub W. Jozwicki
2008-07-13 21:32 ` Jeremy Fitzhardinge
2008-07-13 10:25 ` Alan Cox
2008-07-13 13:30 ` Jakub W. Jozwicki
2008-07-13 14:15 ` Alan Cox
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