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The io_uring_zerocopy.sh kselftest assumes that io_uring support is enabled on the host system. When io_uring is disabled via the kernel.io_uring_disabled sysctl, the test fails. Explicitly enable io_uring for the test by setting kernel.io_uring_disabled=0. Save the original value of kernel.io_uring_disabled before changing it and restore it in cleanup handler to ensure the system state is restored regardless of test outcome. Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com> Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com> Link: https://patch.msgid.link/20260321215908.175465-5-aleksey.oladko@virtuozzo.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>