linux-kernel - Re: [PATCH 3/6] UBI: Fastmap: Ensure that all fastmap work is done upon WL shutdown

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Message-ID: <20141217142644.GB19525@fox>
Date:	Wed, 17 Dec 2014 11:26:44 -0300
From:	Guido Martínez <guido@...guardiasur.com.ar>
To:	Richard Weinberger <richard@....at>
Cc:	dedekind1@...il.com, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/6] UBI: Fastmap: Ensure that all fastmap work is done
 upon WL shutdown

On Mon, Nov 24, 2014 at 02:20:33PM +0100, Richard Weinberger wrote:
> ...otherwise the deferred work might run after datastructures
> got freed and corrupt memory.
> 
> Signed-off-by: Richard Weinberger <richard@....at>

After moving it to shutdown_work():

Reviewed-by: Guido Martínez <guido@...guardiasur.com.ar>

> ---
>  drivers/mtd/ubi/wl.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
> index 7f135df..cb2e571 100644
> --- a/drivers/mtd/ubi/wl.c
> +++ b/drivers/mtd/ubi/wl.c
> @@ -2041,6 +2041,9 @@ static void protection_queue_destroy(struct ubi_device *ubi)
>  void ubi_wl_close(struct ubi_device *ubi)
>  {
>  	dbg_wl("close the WL sub-system");
> +#ifdef CONFIG_MTD_UBI_FASTMAP
> +	flush_work(&ubi->fm_work);
> +#endif
>  	shutdown_work(ubi);
>  	protection_queue_destroy(ubi);
>  	tree_destroy(&ubi->used);
> -- 
> 1.8.4.5
> 
> --
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-- 
Guido Martínez, VanguardiaSur
www.vanguardiasur.com.ar
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