Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE

From	Minchan Kim <minchan@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE
Date	2016-02-22 05:50 +0100
Message-ID	<r4QBz-dr-1@gated-at.bofh.it> (permalink)
References	(3 earlier) <r4MRk-5YM-21@gated-at.bofh.it> <r4NDI-6z9-9@gated-at.bofh.it> <r4O6J-6YD-7@gated-at.bofh.it> <r4OzL-7aj-11@gated-at.bofh.it> <r4PPc-83D-11@gated-at.bofh.it>
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On Mon, Feb 22, 2016 at 12:59:54PM +0900, Sergey Senozhatsky wrote:
> On (02/22/16 11:34), Minchan Kim wrote:
> [..]
> > > I'll take a look at dynamic class page addition.
> > 
> > Thanks, Sergey.
> > 
> > Just a note:
> > 
> > I am preparing zsmalloc migration now and almost done so I hope
> > I can send it within two weeks. In there, I changed a lot of
> > things in zsmalloc, page chaining, struct page fields usecases
> > and locking scheme and so on. The zsmalloc fragment/migration
> > is really painful now so we should solve it first so I hope
> > you help to review that and let's go further dynamic chaining
> > after that, please. :)
> 
> oh, sure.
> 
> so let's keep dynamic page allocation out of sight for now.
> I'll do more tests with the increase ORDER and if it's OK then
> hopefully we can just merge it, it's quite simple and shouldn't
> interfere with any of the changes you are about to introduce.

Thanks.

And as another idea, we could try fallback approach that
we couldn't meet nr_pages to minimize wastage so let's fallback
to order-0 page like as-is. It will enhance, at least than now
with small-amount of code compared to dynmaic page allocation.

Thread

[RFC][PATCH v2 0/3] mm/zsmalloc: increase objects density and reduce memory wastage Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-21 18:30 +0100
  [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-21 18:50 +0100
    Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Minchan Kim <minchan@kernel.org> - 2016-02-22 01:10 +0100
      Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 01:40 +0100
        Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Minchan Kim <minchan@kernel.org> - 2016-02-22 02:30 +0100
          Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 03:00 +0100
            Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 03:10 +0100
            Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Minchan Kim <minchan@kernel.org> - 2016-02-22 04:00 +0100
              Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 05:00 +0100
                Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Minchan Kim <minchan@kernel.org> - 2016-02-22 06:00 +0100
                Re: [RFC][PATCH v2 2/3] zram: use zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 06:10 +0100
  [RFC][PATCH v2 1/3] mm/zsmalloc: introduce zs_get_huge_class_size_watermark() Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-21 19:50 +0100
  [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-21 20:00 +0100
    Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Minchan Kim <minchan@kernel.org> - 2016-02-22 01:30 +0100
      Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 01:50 +0100
        Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Minchan Kim <minchan@kernel.org> - 2016-02-22 02:40 +0100
          Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 03:10 +0100
            Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Minchan Kim <minchan@kernel.org> - 2016-02-22 03:40 +0100
              Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 05:00 +0100
                Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Minchan Kim <minchan@kernel.org> - 2016-02-22 05:50 +0100
                Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 11:50 +0100
          Re: [RFC][PATCH v2 3/3] mm/zsmalloc: increase ZS_MAX_PAGES_PER_ZSPAGE Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-22 03:30 +0100

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