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Date: Wed, 1 Jun 2016 14:39:36 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Minchan Kim <minchan@kernel.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: Re: [PATCH v7 11/12] zsmalloc: page migration support
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On Wed,  1 Jun 2016 08:21:20 +0900 Minchan Kim <minchan@kernel.org> wrote:

> This patch introduces run-time migration feature for zspage.
> 
> ...
>
> +static void kick_deferred_free(struct zs_pool *pool)
> +{
> +	schedule_work(&pool->free_work);
> +}

When CONFIG_ZSMALLOC=m, what keeps all the data structures in place
during a concurrent rmmod?