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SubjectRe: [PATCH 06/35] UBI: Fastmap: Ensure that all fastmap work is done upon WL shutdown
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On Wed, 2014-10-29 at 13:45 +0100, Richard Weinberger wrote:
> ...otherwise the deferred work might run after datastructures
> got freed and corrupt memory.
>
> Signed-off-by: Richard Weinberger <richard@nod.at>
> ---
> 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 bd2e8d5..a06e31e 100644
> --- a/drivers/mtd/ubi/wl.c
> +++ b/drivers/mtd/ubi/wl.c
> @@ -2047,6 +2047,9 @@ 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

I see in patch 35 you introduced the init function. Could you please
introduce fastmap init/close functions earlier, and add this line to the
fastmap close function instead of adding yet another ifdef to wl.c.



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