[PATCH 1/7] UBI: fix refill_wl_user_pool()

[Richard Weinberger]

Am 03.10.2013 17:27, schrieb Artem Bityutskiy:
> On Thu, 2013-10-03 at 17:08 +0200, Richard Weinberger wrote:
>> Am 03.10.2013 17:00, schrieb Artem Bityutskiy:
>>> On Sat, 2013-09-28 at 15:55 +0200, Richard Weinberger wrote:
>>>> If no free PEBs are available refill_wl_user_pool() must not
>>>> return with -ENOSPC immediately.
>>>> It has to block till produce_free_peb() produced a free PEB.
>>>>
>>>> Reported-and-Tested-by: Richard Genoud <richard.genoud at gmail.com>
>>>> Signed-off-by: Richard Weinberger <richard at nod.at>
>>>
>>> What is pool size, I wonder?
>>
>> Currently it's 25 (UBI_FM_WL_POOL_SIZE).
>> If experience shows that 25 is too low/big we can change this constant.
>> Maybe it's also worth making them configurable...
> 
> I if it is a possible scenario that this function will not return until
> 25 (or even 10) PEBs are erased? 
> 

Sure. It will try to gain up to 25 PEBs but return if it gets less.
That's why a pool has a current and a max size.

Thanks,
//richard