Merge tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipgrafted

Pull futex fix from Ingo Molnar:

 - Also allocate a default private futex hash on vfork() as well, to
   avoid races with (private) futex waiters (Peter Zijlstra)

* tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Also allocate private hash on vfork()

1 files changed, 23 insertions, 0 deletions

diff --git a/fs/nfsd/auth.h b/fs/nfsd/auth.h
new file mode 100644
index 000000000..832bc9579
--- /dev/null
+++ b/fs/nfsd/auth.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * nfsd-specific authentication stuff.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef LINUX_NFSD_AUTH_H
+#define LINUX_NFSD_AUTH_H
+
+struct user_namespace;
+struct svc_export;
+struct svc_rqst;
+
+/*
+ * Set the current process's fsuid/fsgid etc to those of the NFS
+ * client user
+ */
+int nfsd_setuser(struct svc_cred *cred, struct svc_export *exp);
+
+struct user_namespace *nfsd_user_namespace(const struct svc_rqst *rqstp);
+
+#endif /* LINUX_NFSD_AUTH_H */