linux-kernel - [PATCH] mm: memcontrol: fix handling of swapaccount parameter

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Date:	Wed, 14 Aug 2013 15:21:35 +0200
From:	Gergely Risko <gergely@...ko.hu>
To:	cgroups@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, Gergely Risko <gergely@...ko.hu>
Subject: [PATCH] mm: memcontrol: fix handling of swapaccount parameter

Fixed swap accounting option parsing to enable if called without argument.

Signed-off-by: Gergely Risko <gergely@...ko.hu>
---
 mm/memcontrol.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c290a1c..8ec2507 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6970,13 +6970,13 @@ struct cgroup_subsys mem_cgroup_subsys = {
 static int __init enable_swap_account(char *s)
 {
 	/* consider enabled if no parameter or 1 is given */
-	if (!strcmp(s, "1"))
+	if (*s++ != '=' || !*s || !strcmp(s, "1"))
 		really_do_swap_account = 1;
 	else if (!strcmp(s, "0"))
 		really_do_swap_account = 0;
 	return 1;
 }
-__setup("swapaccount=", enable_swap_account);
+__setup("swapaccount", enable_swap_account);
 
 static void __init memsw_file_init(void)
 {
-- 
1.8.3.2

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