| commit | cd19181bf9ad4b7f40f2a4e0355d052109c76529 | [log] [tgz] |
|---|---|---|
| author | Ming Lei <ming.lei@redhat.com> | Tue Dec 18 12:15:29 2018 +0800 |
| committer | Jens Axboe <axboe@kernel.dk> | Mon Dec 17 21:35:07 2018 -0700 |
| tree | 30896b4375d72ec6097eedfebaf193b368d9db0e | |
| parent | 3c94d83cb352627f221d971b05f163c17527de74 [diff] |
blk-mq: enable IO poll if .nr_queues of type poll > 0 The queue mapping of type poll only exists when set->map[HCTX_TYPE_POLL].nr_queues is bigger than zero, so enhance the constraint by checking .nr_queues of type poll before enabling IO poll. Otherwise IO race & timeout can be observed when running block/007. Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>