Commit f0a2f2aadbef for kernel

commit f0a2f2aadbef0d44e6df7b43a32b509fbbf39349
Merge: 97f87e578883 b6302e057fdc
Author: Paolo Abeni <pabeni@redhat.com>
Date:   Thu Feb 26 11:10:05 2026 +0100

    Merge branch 'vsock-add-write-once-semantics-to-child_ns_mode'

    Bobby Eshleman says:

    ====================
    vsock: add write-once semantics to child_ns_mode

    Two administrator processes may race when setting child_ns_mode: one
    sets it to "local" and creates a namespace, but another changes it to
    "global" in between. The first process ends up with a namespace in the
    wrong mode. Make child_ns_mode write-once so that a namespace manager
    can set it once, check the value, and be guaranteed it won't change
    before creating its namespaces. Writing a different value after the
    first write returns -EBUSY.

    One patch for the implementation, one for docs, and one for tests.

    v2: https://lore.kernel.org/r/20260218-vsock-ns-write-once-v2-0-19e4c50d509a@meta.com
    v1: https://lore.kernel.org/r/20260217-vsock-ns-write-once-v1-1-a1fb30f289a9@meta.com
    ====================

    Link: https://patch.msgid.link/20260223-vsock-ns-write-once-v3-0-c0cde6959923@meta.com
    Signed-off-by: Paolo Abeni <pabeni@redhat.com>