From: Liu Shixin <liushixin2@huawei.com>
Date: Tue, 13 Sep 2022 07:13:58 +0000 (+0800)
Subject: mm/memcontrol: use kstrtobool for swapaccount param parsing
X-Git-Tag: v6.1-rc1~21^2~146
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=4988fe69527c6e02066aeb454c2db4d6d51d317b;p=linux-2.6-block.git

mm/memcontrol: use kstrtobool for swapaccount param parsing

Use kstrtobool which is more powerful to handle all kinds of parameters
like 'Yy1Nn0' or [oO][NnFf] for "on" and "off".

Link: https://lkml.kernel.org/r/20220913071358.1812206-1-liushixin2@huawei.com
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 1f204a262054..ac6440daf208 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -7507,10 +7507,10 @@ bool mem_cgroup_swap_full(struct folio *folio)
 
 static int __init setup_swap_account(char *s)
 {
-	if (!strcmp(s, "1"))
-		cgroup_memory_noswap = false;
-	else if (!strcmp(s, "0"))
-		cgroup_memory_noswap = true;
+	bool res;
+
+	if (!kstrtobool(s, &res))
+		cgroup_memory_noswap = !res;
 	return 1;
 }
 __setup("swapaccount=", setup_swap_account);