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

From	Minchan Kim <minchan@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v7 11/12] zsmalloc: page migration support
Date	2016-06-02 02:20 +0200
Message-ID	<rFowH-7d9-41@gated-at.bofh.it> (permalink)
References	<rF1gJ-An-3@gated-at.bofh.it> <rF1gK-An-13@gated-at.bofh.it> <rFm1Q-5Ac-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, Jun 01, 2016 at 02:39:36PM -0700, Andrew Morton wrote:
> 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?
> 

The most of data structure in zram start to work by user calling
zs_create_pool and user of zsmalloc should call zs_destroy_pool
before trying doing rmmod where zs_unregister_migration does
flush_work(&pool->free_work).

If I miss something, please let me know it.

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[PATCH v7 11/12] zsmalloc: page migration support Minchan Kim <minchan@kernel.org> - 2016-06-01 01:30 +0200
  Re: [PATCH v7 11/12] zsmalloc: page migration support Vlastimil Babka <vbabka@suse.cz> - 2016-06-01 16:10 +0200
    Re: [PATCH v7 11/12] zsmalloc: page migration support Minchan Kim <minchan@kernel.org> - 2016-06-02 02:30 +0200
      Re: [PATCH v7 11/12] zsmalloc: page migration support Vlastimil Babka <vbabka@suse.cz> - 2016-06-02 13:50 +0200
  Re: [PATCH v7 11/12] zsmalloc: page migration support Andrew Morton <akpm@linux-foundation.org> - 2016-06-01 23:40 +0200
    Re: [PATCH v7 11/12] zsmalloc: page migration support Minchan Kim <minchan@kernel.org> - 2016-06-02 02:20 +0200

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