在 2019/7/18 19:18, Chris Wilson 写道:
Quoting Chunming Zhou (2019-07-18 12:13:39)
if WAIT_FOR_SUBMIT isn't set and in the meanwhile no underlying fence on syncobj, then return non-block error code to user sapce.
Block device required?
Yes, if WAIT_FOR_SUBMIT is set, then that will block device.
-David
I presume you tried the EWOULDBLOCK which would be implied by your sentence and found that would be an interesting experience. -Chris