linux-kernel - Re: [PATCH] UBI: Fix livelock in produce_free

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Message-ID: <1411562205.23429.40.camel@sauron.fi.intel.com>
Date:	Wed, 24 Sep 2014 15:36:45 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Richard Weinberger <richard@....at>
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] UBI: Fix livelock in produce_free_peb()

On Fri, 2014-09-19 at 17:37 +0200, Richard Weinberger wrote:
> The while loop in produce_free_peb() assumes that each work will produce a
> free PEB. This is not true.
> If ubi->works_count is 1 and the only scheduled work is the
> wear_leveling_worker() produce_free_peb() can loop forever in case
> nobody schedules an erase work.
> Fix this issue by checking in the while loop whether work is scheduled.
> 
> Signed-off-by: Richard Weinberger <richard@....at>

Pushed, thanks!

-- 
Best Regards,
Artem Bityutskiy

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