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, 33 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-vduse b/Documentation/ABI/testing/sysfs-class-vduse
new file mode 100644
index 000000000..2f2bc5c8f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-vduse
@@ -0,0 +1,33 @@
+What:		/sys/class/vduse/
+Date:		Oct 2021
+KernelVersion:	5.15
+Contact:	Yongji Xie <xieyongji@bytedance.com>
+Description:
+		The vduse/ class sub-directory belongs to the VDUSE
+		framework and provides a sysfs interface for configuring
+		VDUSE devices.
+
+What:		/sys/class/vduse/control/
+Date:		Oct 2021
+KernelVersion:	5.15
+Contact:	Yongji Xie <xieyongji@bytedance.com>
+Description:
+		This directory entry is created for the control device
+		of VDUSE framework.
+
+What:		/sys/class/vduse/<device-name>/
+Date:		Oct 2021
+KernelVersion:	5.15
+Contact:	Yongji Xie <xieyongji@bytedance.com>
+Description:
+		This directory entry is created when a VDUSE device is
+		created via the control device.
+
+What:		/sys/class/vduse/<device-name>/msg_timeout
+Date:		Oct 2021
+KernelVersion:	5.15
+Contact:	Yongji Xie <xieyongji@bytedance.com>
+Description:
+		(RW) The timeout (in seconds) for waiting for the control
+		message's response from userspace. Default value is 30s.
+		Writing a '0' to the file means to disable the timeout.