tree f5bd394c493f425e12fc6991d2b7adf2121ba506
parent da6c5c720c52cc717124f8f0830b710ea6a092fd
author Jens Axboe <jens.axboe@oracle.com> 1246618668 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1252672410 +0200

cfq-iosched: drain device queue before switching to a sync queue

To lessen the impact of async IO on sync IO, let the device drain of
any async IO in progress when switching to a sync cfqq that has idling
enabled.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>