linux-kernel - Re: [2.6.23-rt3] NMI watchdog trace of deadlock

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Message-ID: <Pine.LNX.4.58.0710271028480.28295@gandalf.stny.rr.com>
Date:	Sat, 27 Oct 2007 10:29:16 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mike Galbraith <efault@....de>
cc:	Ingo Molnar <mingo@...e.hu>, Nick Piggin <nickpiggin@...oo.com.au>,
	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [2.6.23-rt3] NMI watchdog trace of deadlock


--
On Sat, 27 Oct 2007, Mike Galbraith wrote:
>
> Hm.  Looking at the change to mm/bounce.c, perhaps I should do this
> instead?
>
> --- ./fs/ntfs/aops.c.org	2007-10-27 10:16:40.000000000 +0200
> +++ ./fs/ntfs/aops.c	2007-10-27 12:11:07.000000000 +0200
> @@ -139,13 +139,13 @@ static void ntfs_end_buffer_async_read(s
>  		recs = PAGE_CACHE_SIZE / rec_size;
>  		/* Should have been verified before we got here... */
>  		BUG_ON(!recs);
> -		local_irq_save(flags);
> +		local_irq_save_nort(flags);
>  		kaddr = kmap_atomic(page, KM_BIO_SRC_IRQ);
>  		for (i = 0; i < recs; i++)
>  			post_read_mst_fixup((NTFS_RECORD*)(kaddr +
>  					i * rec_size), rec_size);
>  		kunmap_atomic(kaddr, KM_BIO_SRC_IRQ);
> -		local_irq_restore(flags);
> +		local_irq_restore_nort(flags);
>  		flush_dcache_page(page);
>  		if (likely(page_uptodate && !PageError(page)))
>  			SetPageUptodate(page);
>

Thanks, applied.

-- Steve

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