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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782441977; 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=Lxtg31UjbEAyxqTKvCa/od30FlRYpDQFHMe8eif1RX6Nh7YN8g6vLgLlx50POHHgmi/EAZ KHw3/X5zMdy5ktJtAlR+zmEo97DwB3tnAD02q3WV7SNqMS5pA4dQZVAFty9HVxJqClXhRo kwjMGukrMXxCrFh+RiLAsO1Tj288yQ4= 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 v2 4/6] mm/page_owner: add missing newline to count_threshold format string Date: Fri, 26 Jun 2026 10:45:43 +0800 Message-ID: <20260626024550.25677-5-ye.liu@linux.dev> In-Reply-To: <20260626024550.25677-1-ye.liu@linux.dev> References: <20260626024550.25677-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 1EF8AA0005 X-Rspam-User: X-Stat-Signature: z1bnipibz6xjnyszykoby1nyt515itpy X-HE-Tag: 1782441979-541448 X-HE-Meta: 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 2KvncBtv IVUWDLeqjREXeAMS9Onc7GCdwOTkElhVQaUushQo+dNykpGLmLAPkAO/tlIhqfRx3mjpH9KAQr/YfULIZnrv7Ozg1mzt3138aB1pFAzQK8R7gbVefWYW2a0HEnUcgAHYypHh5y0Ery6oCk0p53viwiOWwB6OlM/MYZYv4JyST8LcggbRKE/OjlyQjC4qt7+qDUU6loAORIT1/zGkIgIXHFvz+iE5oEsS/YtCJcA7Agg3f64Ctkk8SUsWkMg== 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