linux-kernel - Re: [PATCHv2 11/11] writeback: prevent unnecessary bdi threads wakeups

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Message-ID: <1279781411.3044.13.camel@localhost>
Date:	Thu, 22 Jul 2010 09:50:11 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Dave Chinner <david@...morbit.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCHv2 11/11] writeback: prevent unnecessary bdi threads
 wakeups

On Thu, 2010-07-22 at 10:41 +1000, Dave Chinner wrote:
> 	if (wakeup_bdi) {
> 		trace_writeback_wakeup(bdi)
> 		spin_lock(&bdi->wb_lock);
> 		if (!bdi->wb.task) {{
> 			trace_writeback_wakeup_nothread(bdi);
> 			wake_up_process(default_backing_dev_info.wb.task);
> 		} else
> 			wake_up_process(bdi->wb.task);
> 		spin_unlock(&bdi->wb_lock);
> 	}

OK, I'll take a look at this and will try to add this to v3, thanks.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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