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 08:50:17 +0200 [thread overview]
Message-ID: <20091005065017.GQ26573@kernel.dk> (raw)
In-Reply-To: <20091005064657.GP26573@kernel.dk>
On Mon, Oct 05 2009, Jens Axboe wrote:
> 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.
Your mailer seems to screw up your patches, it's white space damaged
(tabs are spaces). I hand applied it, but you probably want to check
that out and get it fixed.
--
Jens Axboe
prev parent reply other threads:[~2009-10-05 6:50 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
2009-10-05 6:50 ` Jens Axboe [this message]
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