Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cc19747977824ece6aa1c56a29e974fef5ec2b32
Commit: cc19747977824ece6aa1c56a29e974fef5ec2b32
Parent: 3ed9a2965c47636bc0ebafab31a39f1c105492ca
Author: Jens Axboe <[EMAIL PROTECTED]>
AuthorDate: Fri Apr 20 20:45:39 2007 +0200
Committer: Jens Axboe <[EMAIL PROTECTED]>
CommitDate: Mon Apr 30 09:01:23 2007 +0200
cfq-iosched: tighten queue request overlap condition
For tagged devices, allow overlap of requests if the idle window
isn't enabled on the current active queue.
Signed-off-by: Jens Axboe <[EMAIL PROTECTED]>
---
block/cfq-iosched.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index a8237be..e859b49 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -989,7 +989,8 @@ static struct cfq_queue *cfq_select_queue(struct cfq_data
*cfqd)
* flight or is idling for a new request, allow either of these
* conditions to happen (or time out) before selecting a new queue.
*/
- if (cfqq->dispatched || timer_pending(&cfqd->idle_slice_timer)) {
+ if (timer_pending(&cfqd->idle_slice_timer) ||
+ (cfqq->dispatched && cfq_cfqq_idle_window(cfqq))) {
cfqq = NULL;
goto keep_queue;
}
-
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