linux-kernel - [PATCH] mm/damon/sysfs: use the wrapper directly to check if the kdamond is running

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Message-Id: <1662995513-24489-1-git-send-email-kaixuxia@tencent.com>
Date:   Mon, 12 Sep 2022 23:11:53 +0800
From:   xiakaixu1987@...il.com
To:     sj@...nel.org, akpm@...ux-foundation.org
Cc:     damon@...ts.linux.dev, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH] mm/damon/sysfs: use the wrapper directly to check if the kdamond is running

From: Kaixu Xia <kaixuxia@...cent.com>

We can use the 'damon_sysfs_kdamond_running()' wrapper directly to
check if the kdamond is running in 'damon_sysfs_turn_damon_on()'.

Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 mm/damon/sysfs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 7488e27c87c3..84861c4085a5 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -2455,8 +2455,7 @@ static int damon_sysfs_turn_damon_on(struct damon_sysfs_kdamond *kdamond)
 	struct damon_ctx *ctx;
 	int err;
 
-	if (kdamond->damon_ctx &&
-			damon_sysfs_ctx_running(kdamond->damon_ctx))
+	if (damon_sysfs_kdamond_running(kdamond))
 		return -EBUSY;
 	if (damon_sysfs_cmd_request.kdamond == kdamond)
 		return -EBUSY;
-- 
2.27.0