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Re: [PATCH v3] zram: try vmalloc() after kmalloc()

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On Tue, 24 Nov 2015 08:28:57 +0900 Minchan Kim <minchan@kernel.org> wrote:

> > What's the reasoning behind the modification to the gfp flags?
> > 
> > It clears __GFP_FS, __GFP_IO and even __GFP_WAIT.  I suspect the latter
> > two (at least) can be retained.  And given that vmalloc() uses
> 
> This function is used in swapout and fs write path so we couldn't use
> those flags.

We can use __GFP_RECLAIM (used to be __GFP_WAIT).  That permits the
allocation to wait for in-flight IO to complete and to reclaim clean
pagecache.

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[PATCH v3] zram: try vmalloc() after kmalloc() Kyeongdon Kim <kyeongdon.kim@lge.com> - 2015-11-23 07:30 +0100
  Re: [PATCH v3] zram: try vmalloc() after kmalloc() Minchan Kim <minchan@kernel.org> - 2015-11-23 07:40 +0100
    Re: [PATCH v3] zram: try vmalloc() after kmalloc() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2015-11-23 08:30 +0100
  Re: [PATCH v3] zram: try vmalloc() after kmalloc() Andrew Morton <akpm@linux-foundation.org> - 2015-11-24 00:00 +0100
    Re: [PATCH v3] zram: try vmalloc() after kmalloc() Minchan Kim <minchan@kernel.org> - 2015-11-24 00:30 +0100
      Re: [PATCH v3] zram: try vmalloc() after kmalloc() Andrew Morton <akpm@linux-foundation.org> - 2015-11-24 00:50 +0100
        Re: [PATCH v3] zram: try vmalloc() after kmalloc() Minchan Kim <minchan@kernel.org> - 2015-11-24 01:40 +0100
          Re: [PATCH v3] zram: try vmalloc() after kmalloc() Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2015-11-24 02:10 +0100
            Re: [PATCH v3] zram: try vmalloc() after kmalloc() Minchan Kim <minchan@kernel.org> - 2015-11-24 05:00 +0100
      Re: Re: [PATCH v3] zram: try vmalloc() after kmalloc() Kyeongdon Kim <kyeongdon.kim@lge.com> - 2015-11-24 09:10 +0100
        Re: Re: [PATCH v3] zram: try vmalloc() after kmalloc() Minchan Kim <minchan@kernel.org> - 2015-11-24 09:20 +0100
    Re: Re: [PATCH v3] zram: try vmalloc() after kmalloc() Kyeongdon Kim <kyeongdon.kim@lge.com> - 2015-11-24 09:00 +0100

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