diff options
| author | Ming Lei <ming.lei@redhat.com> | 2018-12-18 12:15:29 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-12-17 21:35:07 -0700 |
| commit | cd19181bf9ad4b7f40f2a4e0355d052109c76529 (patch) | |
| tree | 30896b4375d72ec6097eedfebaf193b368d9db0e /block/compat_ioctl.c | |
| 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>
Diffstat (limited to 'block/compat_ioctl.c')
0 files changed, 0 insertions, 0 deletions