The patch titled
Subject: mm/demotion: make toptier_distance inclusive upper bound of toptiers
has been added to the -mm mm-unstable branch. Its filename is
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-3.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: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Subject: mm/demotion: make toptier_distance inclusive upper bound of toptiers
Date: Tue, 30 Aug 2022 13:44:57 +0530
Based on suggestion from Wei Xu, having an inclusive upper bound is
simpler.
Link: https://lkml.kernel.org/r/20220830081457.118960-1-aneesh.kumar@xxxxxxxxxxxxx
Fixes: mm/demotion: Update node_is_toptier to work with memory tiers
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Bharata B Rao <bharata@xxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: Hesham Almatary <hesham.almatary@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Jagdish Gediya <jvgediya.oss@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: SeongJae Park <sj@xxxxxxxxxx>
Cc: Tim Chen <tim.c.chen@xxxxxxxxx>
Cc: Wei Xu <weixugc@xxxxxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-tiers.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/memory-tiers.c~mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-3
+++ a/mm/memory-tiers.c
@@ -179,7 +179,7 @@ bool node_is_toptier(int node)
toptier = true;
goto out;
}
- if (memtier->adistance_start < top_tier_adistance)
+ if (memtier->adistance_start <= top_tier_adistance)
toptier = true;
else
toptier = false;
@@ -361,7 +361,8 @@ static void establish_demotion_targets(v
* abstract distance below the max value of this memtier
* is considered toptier.
*/
- top_tier_adistance = memtier->adistance_start + MEMTIER_CHUNK_SIZE;
+ top_tier_adistance = memtier->adistance_start +
+ MEMTIER_CHUNK_SIZE - 1;
break;
}
}
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxx are
mm-demotion-add-support-for-explicit-memory-tiers.patch
mm-demotion-move-memory-demotion-related-code.patch
mm-demotion-add-hotplug-callbacks-to-handle-new-numa-node-onlined.patch
mm-demotion-add-hotplug-callbacks-to-handle-new-numa-node-onlined-fix.patch
mm-demotion-dax-kmem-set-nodes-abstract-distance-to-memtier_default_dax_adistance.patch
mm-demotion-dax-kmem-set-nodes-abstract-distance-to-memtier_default_dax_adistance-fix.patch
mm-demotion-build-demotion-targets-based-on-explicit-memory-tiers.patch
mm-demotion-add-pg_data_t-member-to-track-node-memory-tier-details.patch
mm-demotion-drop-memtier-from-memtype.patch
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers.patch
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-3.patch
lib-nodemask-optimize-node_random-for-nodemask-with-single-numa-node.patch
mm-demotion-expose-memory-tier-details-via-sysfs.patch
