Am 27.11.2014 um 16:38 schrieb Artem Bityutskiy:
> On Mon, 2014-11-24 at 14:20 +0100, Richard Weinberger wrote:
>> ...otherwise the deferred work might run after datastructures
>> got freed and corrupt memory.
>>
>> Signed-off-by: Richard Weinberger <rich...@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 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
>
> If you are using the work infrastructure implemented in wl.c, then
> fastmap work should be no different to any other work. And we do flush
> all works in 'shutdown_work()'. The fastmap work should be flushed there
> too.
>
> I think we discussed this already - there should be one single queue of
> works, managed by the same set of functions, all flushed in the same
> place, one-by-one...
>
> Obviously, there is some misunderstanding. This looks like lack of
> separation and misuse of layering. I am missing explanations why I am
> wrong...
So you want me to use the UBI WL background thread for the scheduled fastmap
work?
I didn't do it that way because you said more than once that fastmap is fastmap
and
WL is WL. Therefore I've separated it.
Thanks,
//richard
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