parent 281befa5592b0c5f9a3856b5666c62ac66d3d9ee author Dan Williams 1267676470 -0700 committer Dan Williams 1267676470 -0700 ioat: close potential BUG_ON race in the descriptor cleanup path Since ioat_cleanup_preamble() and the update of the last completed descriptor are not synchronized there is a chance that two cleanup threads can see descriptors to clean. If the first cleans up all pending descriptors then the second will trigger the BUG_ON. Signed-off-by: Dan Williams z$;™