linux-kernel - [PATCH 2/2] mm,page_owner: Drop unnecesary check

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Date: Wed,  6 Mar 2024 13:32:17 +0100
From: Oscar Salvador <osalvador@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	Michal Hocko <mhocko@...e.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Marco Elver <elver@...gle.com>,
	Andrey Konovalov <andreyknvl@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Oscar Salvador <osalvador@...e.de>
Subject: [PATCH 2/2] mm,page_owner: Drop unnecesary check

stackdepot only saves stack_records which size is greather than 0,
so we cannot possibly have empty stack_records.
Drop the check.

Signed-off-by: Oscar Salvador <osalvador@...e.de>
---
 mm/page_owner.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/page_owner.c b/mm/page_owner.c
index 7163a1c44ccf..e7139952ffd9 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -865,8 +865,7 @@ static int stack_print(struct seq_file *m, void *v)
 	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++)
-- 
2.44.0