Could you try with this patch
*.kernel.org/pub/linux/kernel/people/axboe/patches/2.4.0-ac9/loop-2
and see if it helps?
-- * Jens Axboe <axboe@suse.de> * SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/