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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-04-19 14:32:26 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2007-04-30 09:01:22 +0200 |
| commit | 1be92f2fc7b563db3a8909d2d1c6a6520aeca323 (patch) | |
| tree | b3a7fa91a9483315cd86f423925946b3c38cc3c7 /block/cfq-iosched.c | |
| parent | 20e493a8d03b3b2f51b619a453f7bbbebedd6bda (diff) | |
| download | lwn-1be92f2fc7b563db3a8909d2d1c6a6520aeca323.tar.gz lwn-1be92f2fc7b563db3a8909d2d1c6a6520aeca323.zip | |
cfq-iosched: never allow an async queue idling
We don't enable it by default, don't let it get enabled during
runtime.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 839086dcb0af..df82755ac40b 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1603,7 +1603,12 @@ static void cfq_update_idle_window(struct cfq_data *cfqd, struct cfq_queue *cfqq, struct cfq_io_context *cic) { - int enable_idle = cfq_cfqq_idle_window(cfqq); + int enable_idle; + + if (!cfq_cfqq_sync(cfqq)) + return; + + enable_idle = cfq_cfqq_idle_window(cfqq); if (!cic->ioc->task || !cfqd->cfq_slice_idle || (cfqd->hw_tag && CIC_SEEKY(cic))) |