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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782197578; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NTLHd+1oM45Tb0ayVFKU2fogrT4VnS2NCHonHOYwY8w=; b=Ugukt4orz9/h6CKbhSueVDUtSTJA/a0Fzz+6i4dek5nPdOHcgiPahsP++ZG8XhzhVMaKic b9Zfx7ACe1rX8nH88g5a66QikcWvHToBFestsNxco291BJbJzOK6nfBxfIazhgiEOHJ91f z5OkN0zEjPBmZ1Pl1W+x8GJzmk4A5TQ= From: Ye Liu To: Andrew Morton , Vlastimil Babka Cc: Ye Liu , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/6] mm/page_owner: add missing newline to count_threshold format string Date: Tue, 23 Jun 2026 14:52:29 +0800 Message-ID: <20260623065234.31866-5-ye.liu@linux.dev> In-Reply-To: <20260623065234.31866-1-ye.liu@linux.dev> References: <20260623065234.31866-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Stat-Signature: 4rs4xsjqmmtyn1zfh6pwj9qeteyynm8n X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0E7DC4000B X-HE-Tag: 1782197579-472766 X-HE-Meta: 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 8GYiysRY F+pbinELBTWxwGVh65Hhy6+ntJxhI4qzrwjn6uwu8JLmjE49FqXzHxfc/yjV+5hnbn+q2EDmjgTjJRxuGYWMtQJLHp+JEj6ECGMO9tXbr1/UTWARD96m/8QNLyitvDPqCZV/Bc/UTBeyvSyDIuU9griMn10nRJ00TVRIIW6uxnKH3a5tzftiYrm6jMZgM3/gNbbANUA7chMV1jCDvxa+eGbNZMH8Uf1YvyAlVlaKEHCscifZhJ3+e4RWC+A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The DEFINE_SIMPLE_ATTRIBUTE format string for page_owner_threshold_fops is missing a trailing \n. simple_attr_read() uses scnprintf() with the format string, which does not append a newline, so reading /sys/kernel/debug/page_owner_stacks/count_threshold produces output without a terminating newline. Add the missing \n to match the standard debugfs attribute convention. Signed-off-by: Ye Liu --- mm/page_owner.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_owner.c b/mm/page_owner.c index 5d8773c90cd9..958151ccb587 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -981,7 +981,7 @@ static int page_owner_threshold_set(void *data, u64 val) } DEFINE_SIMPLE_ATTRIBUTE(page_owner_threshold_fops, &page_owner_threshold_get, - &page_owner_threshold_set, "%llu"); + &page_owner_threshold_set, "%llu\n"); static int __init pageowner_init(void) -- 2.43.0