+ mm-page_owner-add-missing-newline-to-count_threshold-format-string.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/page_owner: add missing newline to count_threshold format string
has been added to the -mm mm-unstable branch.  Its filename is
     mm-page_owner-add-missing-newline-to-count_threshold-format-string.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_owner-add-missing-newline-to-count_threshold-format-string.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Ye Liu <ye.liu@linux.dev>
Subject: mm/page_owner: add missing newline to count_threshold format string
Date: Tue, 30 Jun 2026 09:53:22 +0800

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.

Link: https://lore.kernel.org/20260630015331.147174-6-ye.liu@linux.dev
Signed-off-by: Ye Liu <ye.liu@linux.dev>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_owner.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/page_owner.c~mm-page_owner-add-missing-newline-to-count_threshold-format-string
+++ a/mm/page_owner.c
@@ -974,7 +974,7 @@ static int page_owner_threshold_set(void
 }
 
 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)
_

Patches currently in -mm which might be from ye.liu@linux.dev are

mm-page_owner-extract-skip_buddy_pages-helper-to-unify-buddy-page-skipping.patch
mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason.patch
mm-use-enum-migrate_reason-instead-of-int-for-migration-reason-parameters.patch
mm-page_owner-hoist-config_memcg-to-function-level-for-print_page_owner_memcg.patch
mm-page_owner-add-missing-newline-to-count_threshold-format-string.patch
mm-page_owner-move-free_ts_nsec-output-to-free-section-in-__dump_page_owner.patch
mm-page_owner-drop-redundant-page_owner-prefix-from-static-symbols.patch
mm-page_owner-clamp-skip_buddy_pages-pfn-advance-at-max_order_nr_pages-boundary.patch
mm-page_owner-use-memcg_data-snapshot-instead-of-pagememcgkmem-to-avoid-toctou-vm_bug_on.patch