Re: cfq: fix possible problem with jiffies wraparound
From: Jens Axboe
Date: Mon Oct 05 2009 - 02:48:18 EST
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
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