[PATCH OLK-6.6 V4 0/2] Support open_tree OPEN_TREE_NAMESPACE

Changes since V3: Delete overmount logic to fix KABI broken. Changes since V2: Add KABI_EXTEND to fix KABI broken. Changes since V1: The position of unlock_mount_hash() has been adjusted to align with the mainline. Christian Brauner (2): mount: add OPEN_TREE_NAMESPACE mount: hold namespace_sem across copy in create_new_namespace() fs/internal.h | 2 + fs/namespace.c | 174 ++++++++++++++++++++++++++++++++++--- fs/nsfs.c | 32 +++++++ include/uapi/linux/mount.h | 3 +- 4 files changed, 198 insertions(+), 13 deletions(-) -- 2.52.0