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authorxiaobing tu <xiaobing.tu@intel.com>2012-12-09 19:19:23 +0100
committerJens Axboe <axboe@kernel.dk>2012-12-09 19:19:23 +0100
commit75274551c81796b636c5acb0c2597dec7ec2e6c4 (patch)
tree6854867ce09c9489e2563b1a0e3ccb0289674491 /block
parent5f6f38dbb0fc8518b19542b0ad0739a8a95f05a1 (diff)
downloadlinux-linaro-stable-75274551c81796b636c5acb0c2597dec7ec2e6c4.tar.gz
deadline: Allow 0ms deadline latency, increase the read speed
Change a timer compare from after to after-equals, thus allowing 0 timeout and making deadline schedule FIFO. Signed-off-by: xiaobing tu <xiaobing.tu@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/deadline-iosched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c
index 599b12e5380f..90037b5eb17f 100644
--- a/block/deadline-iosched.c
+++ b/block/deadline-iosched.c
@@ -230,7 +230,7 @@ static inline int deadline_check_fifo(struct deadline_data *dd, int ddir)
/*
* rq is expired!
*/
- if (time_after(jiffies, rq_fifo_time(rq)))
+ if (time_after_eq(jiffies, rq_fifo_time(rq)))
return 1;
return 0;