| commit | afe660b43b27cfb2431552cb68a258d087c3a22a | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@fb.com> | Fri Apr 03 10:33:55 2015 -0600 |
| committer | Jens Axboe <axboe@fb.com> | Fri Apr 03 10:33:55 2015 -0600 |
| tree | d7ce2600ede8c2714178989d8d6bce98a2b8ea18 | |
| parent | d410135e9187aeb0c13a15d4fd3be2e5d5f4ca65 [diff] |
mpt3sas: store scsi io tracker data in the scsi request Instead of storing the IO tracker structure in a separate list that we need to pop/push to on every submit and complete (and lock), store it in the pdu associated with a request. This is possible on scsi-mq only, and further cuts the spinlock associated time for higher IOPS IO workloads. At 100K IOPS, this effectively cuts the locking time in half. Signed-off-by: Jens Axboe <axboe@fb.com>