The patch titled
Subject: mm/page_alloc: split per cpu page lists and zone stats -fix
has been added to the -mm tree. Its filename is
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix.patch
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------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Subject: mm/page_alloc: split per cpu page lists and zone stats -fix
mm/ is not W=1 clean for allnoconfig but the patch "mm/page_alloc: Split
per cpu page lists and zone stats" makes it worse with the following
warning
mm/vmstat.c: In function `zoneinfo_show_print':
mm/vmstat.c:1698:28: warning: variable `pzstats' set but not used [-Wunused-but-set-variable]
struct per_cpu_zonestat *pzstats;
^~~~~~~
This is a fix to the mmotm patch
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats.patch.
Link: https://lkml.kernel.org/r/20210514144622.GA3735@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/vmstat.c~mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix
+++ a/mm/vmstat.c
@@ -1695,10 +1695,9 @@ static void zoneinfo_show_print(struct s
seq_printf(m, "\n pagesets");
for_each_online_cpu(i) {
struct per_cpu_pages *pcp;
- struct per_cpu_zonestat *pzstats;
+ struct per_cpu_zonestat __maybe_unused *pzstats;
pcp = per_cpu_ptr(zone->per_cpu_pageset, i);
- pzstats = per_cpu_ptr(zone->per_cpu_zonestats, i);
seq_printf(m,
"\n cpu: %i"
"\n count: %i"
@@ -1709,6 +1708,7 @@ static void zoneinfo_show_print(struct s
pcp->high,
pcp->batch);
#ifdef CONFIG_SMP
+ pzstats = per_cpu_ptr(zone->per_cpu_zonestats, i);
seq_printf(m, "\n vm stats threshold: %d",
pzstats->stat_threshold);
#endif
_
Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats.patch
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix.patch
mm-page_alloc-convert-per-cpu-list-protection-to-local_lock.patch
mm-vmstat-convert-numa-statistics-to-basic-numa-counters.patch
mm-vmstat-inline-numa-event-counter-updates.patch
mm-page_alloc-batch-the-accounting-updates-in-the-bulk-allocator.patch
mm-page_alloc-reduce-duration-that-irqs-are-disabled-for-vm-counters.patch
mm-page_alloc-explicitly-acquire-the-zone-lock-in-__free_pages_ok.patch
mm-page_alloc-avoid-conflating-irqs-disabled-with-zone-lock.patch
mm-page_alloc-update-pgfree-outside-the-zone-lock-in-__free_pages_ok.patch
