The patch titled
Subject: mm: consider CMA pages in watermark check for NUMA balancing target node
has been added to the -mm mm-unstable branch. Its filename is
mm-consider-cma-pages-in-watermark-check-for-numa-balancing-target-node.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-consider-cma-pages-in-watermark-check-for-numa-balancing-target-node.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: Kaiyang Zhao <kaiyang2@xxxxxxxxxx>
Subject: mm: consider CMA pages in watermark check for NUMA balancing target node
Date: Thu, 1 Aug 2024 18:04:56 +0000
Currently in migrate_balanced_pgdat(), ALLOC_CMA flag is not passed when
checking watermark on the migration target node. This does not match the
gfp in alloc_misplaced_dst_folio() which allows allocation from CMA.
This causes promotion failures when there are a lot of available CMA
memory in the system.
Therefore, we change the alloc_flags passed to zone_watermark_ok() in
migrate_balanced_pgdat().
Link: https://lkml.kernel.org/r/20240801180456.25927-1-kaiyang2@xxxxxxxxxx
Signed-off-by: Kaiyang Zhao <kaiyang2@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/migrate.c~mm-consider-cma-pages-in-watermark-check-for-numa-balancing-target-node
+++ a/mm/migrate.c
@@ -2526,7 +2526,7 @@ static bool migrate_balanced_pgdat(struc
if (!zone_watermark_ok(zone, 0,
high_wmark_pages(zone) +
nr_migrate_pages,
- ZONE_MOVABLE, 0))
+ ZONE_MOVABLE, ALLOC_CMA))
continue;
return true;
}
_
Patches currently in -mm which might be from kaiyang2@xxxxxxxxxx are
mm-consider-cma-pages-in-watermark-check-for-numa-balancing-target-node.patch
