linux-kernel - [PATCH] dn_route: use time_is_before_jiffies(a) to replace "jiffies

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Message-Id: <20220727024600.18413-1-yuzhe@nfschina.com>
Date:   Wed, 27 Jul 2022 10:46:00 +0800
From:   Yu Zhe <yuzhe@...china.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com
Cc:     linux-decnet-user@...ts.sourceforge.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        liqiong@...china.com, Yu Zhe <yuzhe@...china.com>
Subject: [PATCH] dn_route: use time_is_before_jiffies(a) to replace "jiffies - a > 0"

time_is_before_jiffies deals with timer wrapping correctly.

Signed-off-by: Yu Zhe <yuzhe@...china.com>
---
 net/decnet/dn_route.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 552a53f1d5d0..0a4bed0bc2e3 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -201,7 +201,7 @@ static void dn_dst_check_expire(struct timer_list *unused)
 		}
 		spin_unlock(&dn_rt_hash_table[i].lock);
 
-		if ((jiffies - now) > 0)
+		if (time_is_before_jiffies(now))
 			break;
 	}
 
-- 
2.11.0