Hello, Tejun. 在 2026/9/30 00:27, Tejun Heo 写道: > Hello, Tao. > > On Tue, 29 Sep 2026 21:39:00 +0800, Tao Cui wrote: >> To make sure I understood correctly: attaching switches the active >> model to the attached BPF model, while model=linear and model=bpf >> only switch between the attached model and the builtin model without >> affecting the attachment itself. The attachment survives enable=0, >> and only .unreg removes it. Please shout if I still got that wrong. > > Yes, except that removing the device also removes the attachment, as > ioc_rqos_exit() ejects the model. >
Thanks for confirming. I had left out the device removal case in the summary. v8 keeps the attachment independent from controller state and model selection; only .unreg and device removal (where ioc_rqos_exit() ejects the model) remove the attachment. Thanks. Tao> Thanks. > > -- > tejun
