Re: + mm-damon-introduce-damos_quota_hugepage-auto-tuning.patch added to mm-new branch

[SJ Park <sj@kernel.org>]

Hello Andrew,

On Mon, 31 Aug 2026 16:24:24 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:

> 
> The patch titled
>      Subject: mm/damon: introduce DAMOS_QUOTA_HUGEPAGE auto tuning
> has been added to the -mm mm-new branch.  Its filename is
>      mm-damon-introduce-damos_quota_hugepage-auto-tuning.patch
[...]
> This patch (of 3):
> 
> Introduce DAMOS_QUOTA_HUGEPAGE_MEM_BP auto tuning.  Add a new DAMOS quota
> goal metric to measure the amount of huge page consumption to total memory
> consumption ratio.
> 
> Vmstat may lag, which in some cases may lead to NR_FREE_PAGES being
> greater than or equal to the amount of RAM in the system.  A guard is
> added to avoid the extremely unlikely case [6].  In the case, return 100%
> (10000 bp).
> 
> Link: https://lore.kernel.org/20260831144732.80910-1-sj@kernel.org
> Link: https://lore.kernel.org/20260831144732.80910-2-sj@kernel.org
> Link: https://dl.acm.org/doi/pdf/10.1145/3307650.3322227 [1]
> Link: https://lore.kernel.org/e67f05ad-dbb9-45e6-ba30-b167a99ac67d@huawei-partners.com [2]
> Link: https://lore.kernel.org/20260616150316.580819-3-gutierrez.asier@huawei-partners.com [3]
> Link: https://github.com/asierHuawei/damo/commit/79ae1a4ab1c012a7161db85a000d14f08fa36736 [4]
> Link: https://lore.kernel.org/all/03f678dd-9ef3-4b97-b753-c2e4554c5159@huawei-partners.com/ [5]
> Link: https://lore.kernel.org/all/20260715151615.99767-1-sj@kernel.org/ [6]
> Signed-off-by: Asier Gutierrez <gutierrez.asier@huawei-partners.com>
> Signed-off-by: SJ Park <sj@kernel.org>
> Reviewed-by: SJ Park <sj@kernel.org>
> Cc: David Hildenbrand <david@kernel.org>
> Cc: Jonathan Corbet <corbet@lwn.net>
> Cc: Liam R. Howlett <liam@infradead.org>
> Cc: Lorenzo Stoakes <ljs@kernel.org>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Randy Dunlap <rdunlap@infradead.org>
> Cc: Suren Baghdasaryan <surenb@google.com>
> Cc: Vlastimil Babka <vbabka@kernel.org>
> 
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Seems an empty line before your S-o-b: line is accidentally added.  Could we
remove that?


Thanks,
SJ

[...]