| commit | 1a1238a7dd48e48b3bba8f426a1d61c22c80d6d1 | [log] [tgz] |
|---|---|---|
| author | Shaohua Li <shaohua.li@intel.com> | Tue Oct 27 08:46:23 2009 +0100 |
| committer | Jens Axboe <jens.axboe@oracle.com> | Tue Oct 27 08:46:23 2009 +0100 |
| tree | 08a39610689b5da8e8d61701864b8eb257acd6d7 | |
| parent | e6c5bc737ab71e4af6025ef7d150f5a26ae5f146 [diff] |
cfq-iosched: improve hw_tag detection If active queue hasn't enough requests and idle window opens, cfq will not dispatch sufficient requests to hardware. In such situation, current code will zero hw_tag. But this is because cfq doesn't dispatch enough requests instead of hardware queue doesn't work. Don't zero hw_tag in such case. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>