linux-kernel - Re: [PATCH 0/2] Support kshrinkd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 20 Feb 2024 10:09:16 +0800
From: 李培锋 <lipeifeng@...o.com>
To: akpm@...ux-foundation.org, david@...hat.com, osalvador@...e.de,
 Matthew Wilcox <willy@...radead.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, tkjos@...gle.com,
 gregkh@...gle.com, v-songbaohua@...o.com, v-songbaohua@...o.com
Subject: Re: [PATCH 0/2] Support kshrinkd

add experts from Linux and Google.


在 2024/2/19 22:17, lipeifeng@...o.com 写道:
> From: lipeifeng <lipeifeng@...o.com>
>
> 'commit 6d4675e60135 ("mm: don't be stuck to rmap lock on reclaim path")'
> The above patch would avoid reclaim path to stuck rmap lock.
> But it would cause some folios in LRU not sorted by aging because
> the contended-folios in rmap_walk would be putbacked to the head of LRU
> during shrink_folio_list even if the folios are very cold.
>
> The patchset setups new kthread:kshrinkd to reclaim the contended-folio
> in rmap_walk when shrink_folio_list, to avoid to break the rules of LRU.
>
> lipeifeng (2):
>    mm/rmap: support folio_referenced to control if try_lock in rmap_walk
>    mm: support kshrinkd
>
>   include/linux/mmzone.h        |   6 ++
>   include/linux/rmap.h          |   5 +-
>   include/linux/swap.h          |   3 +
>   include/linux/vm_event_item.h |   2 +
>   mm/memory_hotplug.c           |   2 +
>   mm/rmap.c                     |   5 +-
>   mm/vmscan.c                   | 205 ++++++++++++++++++++++++++++++++++++++++--
>   mm/vmstat.c                   |   2 +
>   8 files changed, 221 insertions(+), 9 deletions(-)
>