linux-kernel - Re: [RFC][PATCH 0/9] [v3] Migrate Pages in lieu of discard

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Message-ID: <20200824223645.GA1490647@dhcp-10-100-145-180.wdl.wdc.com>
Date:   Mon, 24 Aug 2020 15:36:45 -0700
From:   Keith Busch <kbusch@...nel.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, yang.shi@...ux.alibaba.com,
        rientjes@...gle.com, ying.huang@...el.com, dan.j.williams@...el.com
Subject: Re: [RFC][PATCH 0/9] [v3] Migrate Pages in lieu of discard

On Tue, Aug 18, 2020 at 11:41:22AM -0700, Dave Hansen wrote:
> Dave Hansen (5):
>       mm/numa: node demotion data structure and lookup
>       mm/vmscan: Attempt to migrate page in lieu of discard
>       mm/numa: automatically generate node migration order
>       mm/vmscan: never demote for memcg reclaim
>       mm/numa: new reclaim mode to enable reclaim-based migration
> 
> Keith Busch (2):
>       mm/migrate: Defer allocating new page until needed
>       mm/vmscan: Consider anonymous pages without swap
> 
> Yang Shi (1):
>       mm/vmscan: add page demotion counter
> 
>  Documentation/admin-guide/sysctl/vm.rst |    9
>  include/linux/migrate.h                 |    6
>  include/linux/node.h                    |    9
>  include/linux/vm_event_item.h           |    2
>  include/trace/events/migrate.h          |    3
>  mm/debug.c                              |    1
>  mm/internal.h                           |    1
>  mm/migrate.c                            |  400 ++++++++++++++++++++++++++------
>  mm/page_alloc.c                         |    2
>  mm/vmscan.c                             |   88 ++++++-
>  mm/vmstat.c                             |    2
>  11 files changed, 439 insertions(+), 84 deletions(-)

The commit summary and diff stat appear to be from an earlier revision
of the series. No big deal, just pointing that out. BTW, thank you for
continuing to enhance this capability! :) I'd missed out on the earlier
discussion from some bad filters that have should now be fixed
(hopefully), so I've some catching up to do.