From: Jens Axboe <jens.axboe@oracle.com>
To: Corrado Zoccolo <czoccolo@gmail.com>
Cc: Linux-Kernel <linux-kernel@vger.kernel.org>,
Jeff Moyer <jmoyer@redhat.com>
Subject: Re: cfq: fix possible problem with jiffies wraparound
Date: Mon, 5 Oct 2009 08:46:58 +0200 [thread overview]
Message-ID: <20091005064657.GP26573@kernel.dk> (raw)
In-Reply-To: <200910041909.08282.czoccolo@gmail.com>
On Sun, Oct 04 2009, Corrado Zoccolo wrote:
> The RR service tree is indexed by a key that is relative to current jiffies.
> This can cause problems on jiffies wraparound.
>
> The patch fixes it using time_before comparison, and changing
> the add_front path to use a relative number, too.
Good spotting, applied.
--
Jens Axboe
next prev parent reply other threads:[~2009-10-05 6:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-04 17:09 cfq: fix possible problem with jiffies wraparound Corrado Zoccolo
2009-10-05 6:46 ` Jens Axboe [this message]
2009-10-05 6:50 ` Jens Axboe
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