Re: [PATCH v2] MD: raid, fix BUG caused by flags handling

Jiri Slaby [off-list ref] writes:

Commit 74450be1 (block: unify flags for struct bio and struct request)
added direct test of flags in the & form:
  const bool do_sync = (bio->bi_rw & REQ_SYNC);
But this doesn't fit into bool with my compiler (gcc 4.5). So change
the type to ulong to avoid the bug.

At first I wondered why you didn't use the !! trick, but after looking
at the code, I see that the result is |'d into bi_rw.

Looks good.  Sounds like it might have been a real bear to track down.

Reviewed-by: Jeff Moyer <redacted>