+ pid-introduce-task_ppid_vnr.patch added to mm-nonmm-unstable branch

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

The patch titled
     Subject: pid: introduce task_ppid_vnr()
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     pid-introduce-task_ppid_vnr.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/pid-introduce-task_ppid_vnr.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: Oleg Nesterov <oleg@redhat.com>
Subject: pid: introduce task_ppid_vnr()
Date: Sun, 10 Aug 2025 19:36:10 +0200

For consistency with other task_xid_vnr() helpers.

Link: https://lkml.kernel.org/r/20250810173610.GA19995@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: gaoxiang17 <gaoxiang17@xiaomi.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/pidfs.c          |    2 +-
 include/linux/pid.h |    5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

--- a/fs/pidfs.c~pid-introduce-task_ppid_vnr
+++ a/fs/pidfs.c
@@ -397,7 +397,7 @@ static long pidfd_info(struct file *file
 	 * the fields are set correctly, or return ESRCH to avoid providing
 	 * incomplete information. */
 
-	kinfo.ppid = task_ppid_nr_ns(task, NULL);
+	kinfo.ppid = task_ppid_vnr(task);
 	kinfo.tgid = task_tgid_vnr(task);
 	kinfo.pid = task_pid_vnr(task);
 	kinfo.mask |= PIDFD_INFO_PID;
--- a/include/linux/pid.h~pid-introduce-task_ppid_vnr
+++ a/include/linux/pid.h
@@ -310,6 +310,11 @@ static inline pid_t task_ppid_nr_ns(cons
 	return pid;
 }
 
+static inline pid_t task_ppid_vnr(const struct task_struct *tsk)
+{
+	return task_ppid_nr_ns(tsk, NULL);
+}
+
 static inline pid_t task_ppid_nr(const struct task_struct *tsk)
 {
 	return task_ppid_nr_ns(tsk, &init_pid_ns);
_

Patches currently in -mm which might be from oleg@redhat.com are

pid-make-__task_pid_nr_nsns-=-null-safe-for-zombie-callers.patch
pid-introduce-task_ppid_vnr.patch
pid-change-bacct_add_tsk-to-use-task_ppid_nr_ns.patch
pid-change-task_state-to-use-task_ppid_nr_ns.patch