Re: [PATCH 60/78] zram: remove the claim mechanism

Christoph Hellwig
2020-11-26T10:00:09Z

On Wed, Nov 25, 2020 at 05:11:07PM -0800, Minchan Kim wrote:
> With this patch, how deal with the race?
>
> CPU 1 CPU 2
>
> hot_remove_store
> zram_remove
> zram_busy
> return -EBUSY
> open /dev/zram0
> del_gendisk
> zram_reset and destroy

Yeah, it looks like zram does not really handle hot unplugging unlike
other drivers. So I've dropped this one for now.