vboxsf: Make vboxsf_dir_create() return the handle for the created file

stable inclusion
from stable-5.10.59
commit bd909fd3878d4cec9bba70d74dce3d8f3e7581fd
bugzilla: 176988 https://gitee.com/openeuler/kernel/issues/I4EAR4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bd909fd3878d4cec9bba70d74dce3d8f3e7581fd



--------------------------------

commit ab0c2968 upstream

Make vboxsf_dir_create() optionally return the vboxsf-handle for
the created file. This is a preparation patch for adding atomic_open
support.

Fixes: 0fd16957 ("fs: Add VirtualBox guest shared folder (vboxsf) support")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>