attach_task_ctx_data
if (!attach_task_ctx_data(p, ctx_cache, true, GFP_NOWAIT))
ret = attach_task_ctx_data(p, ctx_cache, true, GFP_KERNEL);
return attach_task_ctx_data(task, ctx_cache, false, GFP_KERNEL);
attach_task_ctx_data(child, ctx_cache, true, GFP_KERNEL);