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authorCorrado Zoccolo <czoccolo@gmail.com>2009-11-26 03:41:21 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-11-26 03:46:46 -0500
commitc16632bab1a17e357cec66920ceb3f0630009360 (patch)
tree6937755404314252f0bf2c46eec374c32c12f8b1 /fs
parent2d4dc890b5c8fabd818a8586607e6843c4375e62 (diff)
cfq-iosched: cleanup unreachable code
cfq_should_idle returns false for no-idle queues that are not the last, so the control flow will never reach the removed code in a state that satisfies the if condition. The unreachable code was added to emulate previous cfq behaviour for non-NCQ rotational devices. My tests show that even without it, the performances and fairness are comparable with previous cfq, thanks to the fact that all seeky queues are grouped together, and that we idle at the end of the tree. Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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