| commit | b32232073e8061b41258bff2a10a06a91677480a | [log] [tgz] |
|---|---|---|
| author | Bart Van Assche <bvanassche@acm.org> | Mon Dec 08 08:46:34 2014 -0700 |
| committer | Jens Axboe <axboe@fb.com> | Mon Dec 08 08:46:34 2014 -0700 |
| tree | 5cf6507cccea99afd291e0274c205c6474895881 | |
| parent | 6637fadf25657e619a50fde5ff3ae09a98d20eb5 [diff] |
blk-mq: fix hang in bt_get() Avoid that if there are fewer hardware queues than CPU threads that bt_get() can hang. The symptoms of the hang were as follows: * All tags allocated for a particular hardware queue. * (nr_tags) pending commands for that hardware queue. * No pending commands for the software queues associated with that hardware queue. Signed-off-by: Jens Axboe <axboe@fb.com>