The Linux Kernel Mailing List
 help / color / mirror / Atom feed
From: Ye Liu <ye.liu@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>,
	Vlastimil Babka <vbabka@kernel.org>
Cc: Ye Liu <ye.liu@linux.dev>, Suren Baghdasaryan <surenb@google.com>,
	Michal Hocko <mhocko@suse.com>,
	Brendan Jackman <jackmanb@google.com>,
	Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
	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	[thread overview]
Message-ID: <20260623065234.31866-5-ye.liu@linux.dev> (raw)
In-Reply-To: <20260623065234.31866-1-ye.liu@linux.dev>

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 <ye.liu@linux.dev>
---
 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


  parent reply	other threads:[~2026-06-23  6:53 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20260623065234.31866-1-ye.liu@linux.dev>
2026-06-23  6:52 ` [PATCH 1/6] mm/page_owner: extract skip_buddy_pages() helper to unify buddy page skipping Ye Liu
2026-06-23  6:52 ` [PATCH 2/6] mm/page_owner: use MIGRATE_REASON_NONE instead of -1 for last_migrate_reason Ye Liu
2026-06-23  6:52 ` [PATCH 3/6] mm/page_owner: hoist CONFIG_MEMCG to function level for print_page_owner_memcg() Ye Liu
2026-06-23  6:52 ` Ye Liu [this message]
2026-06-23  6:52 ` [PATCH 5/6] mm/page_owner: move free_ts_nsec output to free section in __dump_page_owner() Ye Liu
2026-06-23  6:52 ` [PATCH 6/6] mm/page_owner: drop redundant page_owner prefix from static symbols Ye Liu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260623065234.31866-5-ye.liu@linux.dev \
    --to=ye.liu@linux.dev \
    --cc=akpm@linux-foundation.org \
    --cc=hannes@cmpxchg.org \
    --cc=jackmanb@google.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mhocko@suse.com \
    --cc=surenb@google.com \
    --cc=vbabka@kernel.org \
    --cc=ziy@nvidia.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox