The patch titled
Subject: mm/mempolicy: failed to disable numa balancing
has been added to the -mm mm-unstable branch. Its filename is
mm-mempolicy-failed-to-disable-numa-balancing.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mempolicy-failed-to-disable-numa-balancing.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: tzm <tcm1030@xxxxxxx>
Subject: mm/mempolicy: failed to disable numa balancing
Date: Fri, 2 Dec 2022 22:16:30 +0800
The kernel fails to disable numa balancing policy permanently when the
user passes <numa_balancing=disable> to the boot cmdline parameters. The
numabalancing_override variable is 1 for enable -1 for disable. So,
!numabalancing_override will always be true, which causes this bug.
Link: https://lkml.kernel.org/r/20221202141630.41220-1-tcm1030@xxxxxxx
Signed-off-by: tzm <tcm1030@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/mempolicy.c~mm-mempolicy-failed-to-disable-numa-balancing
+++ a/mm/mempolicy.c
@@ -2865,7 +2865,7 @@ static void __init check_numabalancing_e
if (numabalancing_override)
set_numabalancing_state(numabalancing_override == 1);
- if (num_online_nodes() > 1 && !numabalancing_override) {
+ if (num_online_nodes() > 1 && (numabalancing_override == 1)) {
pr_info("%s automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl\n",
numabalancing_default ? "Enabling" : "Disabling");
set_numabalancing_state(numabalancing_default);
_
Patches currently in -mm which might be from tcm1030@xxxxxxx are
mm-mempolicy-failed-to-disable-numa-balancing.patch
