The patch titled
Subject: mm,page_owner: drop unnecesary check
has been added to the -mm mm-unstable branch. Its filename is
mmpage_owner-drop-unnecesary-check.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmpage_owner-drop-unnecesary-check.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: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm,page_owner: drop unnecesary check
Date: Wed, 6 Mar 2024 13:32:17 +0100
stackdepot only saves stack_records which size is greather than 0,
so we cannot possibly have empty stack_records.
Drop the check.
Link: https://lkml.kernel.org/r/20240306123217.29774-3-osalvador@xxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: kernel test robot <oliver.sang@xxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_owner.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/page_owner.c~mmpage_owner-drop-unnecesary-check
+++ a/mm/page_owner.c
@@ -865,8 +865,7 @@ static int stack_print(struct seq_file *
entries = stack_record->entries;
stack_count = refcount_read(&stack_record->count) - 1;
- if (!nr_entries || nr_entries < 0 || stack_count < 1 ||
- stack_count < page_owner_stack_threshold)
+ if (stack_count < 1 || stack_count < page_owner_stack_threshold)
return 0;
for (i = 0; i < nr_entries; i++)
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mmpage_owner-check-for-null-stack_record-before-bumping-its-refcount.patch
mmpage_owner-drop-unnecesary-check.patch
