tree 54169a387e8e4a5f6f79e06de6fbdd0096198069
parent 0b182d617eb50762b483658dd6dd9a9fbcb25758
author Jens Axboe <jens.axboe@oracle.com> 1254855224 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1254856172 +0200

cfq-iosched: fix the slice residual sign

We should subtract the slice residual from the rb tree key, since
a negative residual count indicates that the cfqq overran its slice
the last time. Hence we want to add the overrun time, to position
it a bit further away in the service tree.

Reported-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>