linux-kernel - [PATCH 06/15] mm/swap: remove buggy cache->nr check in refill_swap_slots

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220509131416.17553-7-linmiaohe@huawei.com>
Date:   Mon, 9 May 2022 21:14:07 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <willy@...radead.org>, <vbabka@...e.cz>, <dhowells@...hat.com>,
        <neilb@...e.de>, <apopple@...dia.com>, <david@...hat.com>,
        <surenb@...gle.com>, <peterx@...hat.com>,
        <naoya.horiguchi@....com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH 06/15] mm/swap: remove buggy cache->nr check in refill_swap_slots_cache

refill_swap_slots_cache is always called when cache->nr is 0. And if
cache->nr != 0, we should return cache->nr instead of 0. So remove
such buggy and confusing check.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/swap_slots.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index 2f877e6f87d7..2a65a89b5b4d 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -258,7 +258,7 @@ void enable_swap_slots_cache(void)
 /* called with swap slot cache's alloc lock held */
 static int refill_swap_slots_cache(struct swap_slots_cache *cache)
 {
-	if (!use_swap_slot_cache || cache->nr)
+	if (!use_swap_slot_cache)
 		return 0;
 
 	cache->cur = 0;
-- 
2.23.0