tree bc878dcc44bb1e04a0ceb44bf4bcbcf8d82e98b3
parent 99f3c90d0d85708e7401a81ce3314e50bf7f2819
author Mike Snitzer <snitzer@redhat.com> 1469495331 -0400
committer Mike Snitzer <snitzer@redhat.com> 1470169294 -0400

dm mpath: add locking to multipath_resume and must_push_back

Multiple flags were being tested without locking.  Protect against
non-atomic bit changes in m->flags by holding m->lock (while testing or
setting the queue_if_no_path related flags).

Signed-off-by: Mike Snitzer <snitzer@redhat.com>