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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782784447; 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=hMPk4xo0goYwl32b+O7Fi24CGRO5SYSFgHPQLi10p/I=; b=LSiiba7zXygXulV5c0kYCS4AjrwmfPmf+H7JfVnMeAMhKLgS7OqMOd17+OGxTh+p7SGtYG sPhsPus0lUAEOz3RFlS/iZE4mhUSiX2kKvgvUVuAL+z7hPwC3XG5Sx/UM+t48EPTgiEHyr 3tCK9KErifgzHmgPDtwsOI05IVAX1ZQ= From: Ye Liu To: Andrew Morton , Vlastimil Babka Cc: Ye Liu , Zi Yan , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 5/7] mm/page_owner: add missing newline to count_threshold format string Date: Tue, 30 Jun 2026 09:53:22 +0800 Message-ID: <20260630015331.147174-6-ye.liu@linux.dev> In-Reply-To: <20260630015331.147174-1-ye.liu@linux.dev> References: <20260630015331.147174-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Stat-Signature: jsxpdgf6d9r8ee93b3aeekrp917ukr3t X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 176241A0005 X-HE-Tag: 1782784448-558395 X-HE-Meta: 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 k1u9YPpu xyA9oIxXdAi5uzM4qcBw2Gl72H35Q7polHNITS1TkRebMY9g0OZktZNACAgbEUe5dEYpCY3umLeOoruWQkuH1bI1OpqZo+QUpLNJzwKvWvfvP0ouubJ14uRI/ZTMs5dU769DIzQBwiyel36AWShMlvduB7CQQdimd1XA7dA5HPRp3qEESyTR9wdXX7TfCOodoQ27Yf9isq3Q/fgVAxU5cHmz8HQUl1UOZ7gxaSRX/GOHkNiXkIFUNMfLm52h8qPRdHcNlvVdinMJGKqNLPAUcdCdhe1jIogm27/GjtAE713pKaCM= 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 Reviewed-by: Zi Yan Reviewed-by: Vlastimil Babka (SUSE) --- 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 fe2bf2274d8a..7520718f63f1 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -974,7 +974,7 @@ 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