Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1719810

Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE request

From Vlastimil Babka <vbabka@suse.cz>
Newsgroups linux.kernel
Subject Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE request
Date 2017-08-25 10:00 +0200
Message-ID <uihH4-1eB-9@gated-at.bofh.it> (permalink)
References <uhTbI-2lw-17@gated-at.bofh.it> <uhWVY-4Hm-29@gated-at.bofh.it> <uiaFA-5hT-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On 08/25/2017 02:20 AM, Joonsoo Kim wrote:
> On Thu, Aug 24, 2017 at 11:41:58AM +0200, Vlastimil Babka wrote:
> 
> Hmm, this is already pointed by Minchan and I have answered that.
> 
> lkml.kernel.org/r/<20170421013243.GA13966@js1304-desktop>
> 
> If you have a better idea, please let me know.

My idea is that size of sysctl_lowmem_reserve_ratio is ZONE_NORMAL+1 and
it has no entries for zones > NORMAL. The
setup_per_zone_lowmem_reserve() is adjusted to only set
lower_zone->lowmem_reserve[j] for idx <= ZONE_NORMAL.

I can't imagine somebody would want override the ratio for HIGHMEM or
MOVABLE
(where it has no effect anyway) so the simplest thing is not to expose
it at all.

> Thanks.
>

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE request js1304@gmail.com - 2017-08-24 07:50 +0200
  Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Michal Hocko <mhocko@kernel.org> - 2017-08-24 11:40 +0200
    Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-25 02:20 +0200
      Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Michal Hocko <mhocko@kernel.org> - 2017-08-25 09:40 +0200
  Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Vlastimil Babka <vbabka@suse.cz> - 2017-08-24 11:50 +0200
    Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-25 02:30 +0200
      Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Michal Hocko <mhocko@kernel.org> - 2017-08-25 09:40 +0200
        Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-28 02:20 +0200
          Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Michal Hocko <mhocko@kernel.org> - 2017-08-28 12:00 +0200
            Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-29 02:50 +0200
              Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Michal Hocko <mhocko@kernel.org> - 2017-08-29 15:40 +0200
                Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-31 03:50 +0200
      Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Vlastimil Babka <vbabka@suse.cz> - 2017-08-25 10:00 +0200
        Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-28 02:30 +0200
          Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Vlastimil Babka <vbabka@suse.cz> - 2017-08-28 08:50 +0200
            Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2017-08-29 02:40 +0200
              Re: [PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for  ZONE_MOVABLE request Vlastimil Babka <vbabka@suse.cz> - 2017-08-29 09:10 +0200

csiph-web