linux-kernel - Re: [PATCH v7 11/12] zsmalloc: page migration support

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Message-Id: <20160601143936.a7ad8eec093514e3ee54cc62@linux-foundation.org>
Date:	Wed, 1 Jun 2016 14:39:36 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Minchan Kim <minchan@...nel.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [PATCH v7 11/12] zsmalloc: page migration support

On Wed,  1 Jun 2016 08:21:20 +0900 Minchan Kim <minchan@...nel.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?