The patch titled
Subject: mm: accept to promo watermark
has been added to the -mm mm-unstable branch. Its filename is
mm-accept-to-promo-watermark.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-accept-to-promo-watermark.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: mm: accept to promo watermark
Date: Fri, 9 Aug 2024 14:48:54 +0300
Commit c574bbe91703 ("NUMA balancing: optimize page placement for memory
tiering system") introduced a new watermark above "high" -- "promo".
Accept memory memory to the highest watermark which is WMARK_PROMO now.
Link: https://lkml.kernel.org/r/20240809114854.3745464-9-kirill.shutemov@xxxxxxxxxxxxxxx
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/page_alloc.c~mm-accept-to-promo-watermark
+++ a/mm/page_alloc.c
@@ -7010,8 +7010,8 @@ static bool cond_accept_memory(struct zo
if (list_empty(&zone->unaccepted_pages))
return false;
- /* How much to accept to get to high watermark? */
- to_accept = high_wmark_pages(zone) -
+ /* How much to accept to get to promo watermark? */
+ to_accept = promo_wmark_pages(zone) -
(zone_page_state(zone, NR_FREE_PAGES) -
__zone_watermark_unusable_free(zone, order, 0) -
zone_page_state(zone, NR_UNACCEPTED));
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
mm-fix-endless-reclaim-on-machines-with-unaccepted-memory.patch
mm-reduce-deferred-struct-page-init-ifdeffery.patch
mm-accept-memory-in-__alloc_pages_bulk.patch
mm-introduce-pageunaccepted-page-type.patch
mm-rework-accept-memory-helpers.patch
mm-add-a-helper-to-accept-page.patch
mm-page_isolation-handle-unaccepted-memory-isolation.patch
mm-accept-to-promo-watermark.patch
