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authorGui Jianfeng <guijianfeng@cn.fujitsu.com>2009-11-26 09:14:11 +0100
committerJens Axboe <jens.axboe@oracle.com>2009-11-26 09:14:11 +0100
commit3586e917f2c7df769d173c4ec99554cb40a911e5 (patch)
treed72ad5ca6c17a3db628734e36b22d79065e0eb49 /fs/bio.c
parent32a87c0114f37871aefb12a30de3e0c3300e3646 (diff)
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cfq: Make use of service count to estimate the rb_key offset
For the moment, different workload cfq queues are put into different service trees. But CFQ still uses "busy_queues" to estimate rb_key offset when inserting a cfq queue into a service tree. I think this isn't appropriate, and it should make use of service tree count to do this estimation. This patch is for for-2.6.33 branch. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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