On 2020-03-09 13:54, Ewan D. Milne wrote: > The only purpose of the flag is to try to suppress duplicate messages, > in the common case it is a single thread submitting the queued I/O which > is going to get rejected. If multiple threads submit I/O there might > be duplicated messages but that is not all that critical. Hence the > lack of locking on the flag. Hi Ewan, My concern is that scsi_prep_state_check() may be called from more than one thread at the same time and that bitfield changes are not thread-safe. Thanks, Bart.
