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| author | Gui Jianfeng <guijianfeng@cn.fujitsu.com> | 2010-12-17 08:57:14 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-12-17 08:57:14 +0100 |
| commit | 7278c9c19bd85cf33213a2e0b538a18d3ac8ad00 (patch) | |
| tree | e080ada1f8cc00fef4600976f8cf489cc94d1c03 /block/genhd.c | |
| parent | a8adbe378b56acd5945df70753c7e8f6fe223304 (diff) | |
| download | op-kernel-dev-7278c9c19bd85cf33213a2e0b538a18d3ac8ad00.zip op-kernel-dev-7278c9c19bd85cf33213a2e0b538a18d3ac8ad00.tar.gz | |
cfq-iosched: don't check cfqg in choose_service_tree()
When cfq_choose_cfqg() is called in select_queue(), there must be at least one
backlogged CFQ queue waiting for dispatching, hence there must be at least one
backlogged CFQ group on service tree. So we never call choose_service_tree()
with cfqg == NULL.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/genhd.c')
0 files changed, 0 insertions, 0 deletions
