Re: [PATCH v2 0/4] zcache: a compressed file page cache

[Kyungmin Park <kmpark@infradead.org>]

On Mon, Aug 12, 2013 at 9:19 PM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> On Tue, Aug 06, 2013 at 10:24:20PM +0800, Bob Liu wrote:
>> Hi Greg,
>>
>> On 08/06/2013 09:58 PM, Greg KH wrote:
>> > On Tue, Aug 06, 2013 at 07:36:13PM +0800, Bob Liu wrote:
>> >> Dan Magenheimer extended zcache supporting both file pages and anonymous pages.
>> >> It's located in drivers/staging/zcache now. But the current version of zcache is
>> >> too complicated to be merged into upstream.
>> >
>> > Really?  If this is so, I'll just go delete zcache now, I don't want to
>> > lug around dead code that will never be merged.
>> >
>>
>> Zcache in staging have a zbud allocation which is almost the same as
>> mm/zbud.c but with different API and have a frontswap backend like
>> mm/zswap.c.
>> So I'd prefer reuse mm/zbud.c and mm/zswap.c for a generic memory
>> compression solution.
>> Which means in that case, zcache in staging = mm/zswap.c + mm/zcache.c +
>> mm/zbud.c.
>>
>> But I'm not sure if there are any existing users of zcache in staging,
>> if not I can delete zcache from staging in my next version of this
>> mm/zcache.c series.
>
> I think the Samsung folks are using it (zcache).

I'm not sure, but, at least, my team doesn't use it at now.

Thank you,
Kyungmin Park

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