On Thu, Jan 02, 2025 at 11:33:34AM +0800, Jianbo Liu wrote:
Re-locking doesn't look great, glancing at the code I don't see any obvious better workarounds. Easiest fix would be to don't let the drivers sleep in the callbacks and then we can go back to a spin lock. Maybe nvidia people have better ideas, I'm not familiar with this offload.
I don't know how to disable bonding sleeping since we use mutex_lock now. Hi Jianbo, do you have any idea?
I think we should allow drivers to sleep in the callbacks. So, maybe it's better to move driver's xdo_dev_state_delete out of state's spin lock.
I just check the code, xfrm_dev_state_delete() and later dev->xfrmdev_ops->xdo_dev_state_delete(x) have too many xfrm_state x checks. Can we really move it out of spin lock from xfrm_state_delete()
Thanks Hangbin