[PATCH] jffs2: Fix serious write stall due to erase

[Artem Bityutskiy]

On Thu, 2010-10-07 at 18:01 +0200, Joakim Tjernlund wrote:
> Drop the alloc_sem before erasing flash in
> jffs2_garbage_collect_pass().
> Otherwise writes are put on hold until the erase
> has finised.
> 
> Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund at transmode.se>
> ---
> 
>  I am fairly sure it is safe to unlock the alloc_sem before
>  calling jffs2_erase_pending_blocks(). Extra confirmation
>  would be great though.
> 
>  This problem was introduced in 2.6.35

This looks safe for me as well, but I do not remember JFFS2 locking
rules anymore, so I'm not 100% sure. I've pushed your patch to my
l2-mtd-2.6.git.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)