+ fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment.patch added to mm-nonmm-unstable branch

+ fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: fork-comment-fix: remove ambiguous question mark in CLONE_CHILD_CLEARTID comment
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment.patch

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

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------------------------------------------------------
From: Minu Jin <s9430939@naver.com>
Subject: fork-comment-fix: remove ambiguous question mark in CLONE_CHILD_CLEARTID comment
Date: Tue, 25 Nov 2025 09:04:07 +0900

The current comment "Clear TID on mm_release()?" ends with a question
mark, implying uncertainty about whether the TID is actually cleared in
mm_release().

However, the code flow is deterministic.  When a task exits, mm_release()
explicitly checks 'tsk->clear_child_tid' and clears.

Since this behavior is unambiguous, remove the confusing question mark and
rephrase the comment to clearly state that TID is cleared in mm_release().

Link: https://lkml.kernel.org/r/20251125000407.24470-1-s9430939@naver.com
Signed-off-by: Minu Jin <s9430939@naver.com>
Cc: Ben Segall <bsegall@google.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/fork.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/fork.c~fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment
+++ a/kernel/fork.c
@@ -2075,7 +2075,7 @@ __latent_entropy struct task_struct *cop
 
 	p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? args->child_tid : NULL;
 	/*
-	 * Clear TID on mm_release()?
+	 * TID is cleared in mm_release() when the task exits
 	 */
 	p->clear_child_tid = (clone_flags & CLONE_CHILD_CLEARTID) ? args->child_tid : NULL;
 
_

Patches currently in -mm which might be from s9430939@naver.com are

fork-comment-fix-remove-ambiguous-question-mark-in-clone_child_cleartid-comment.patch