Commit d57d6115 authored by Stephane Gasparini's avatar Stephane Gasparini Committed by Jens Axboe

kernel/fs: fix I/O wait not accounted for RW O_DSYNC

 When a process is doing Random Write with O_DSYNC flag
 the I/O wait are not accounted in the kernel (get_cpu_iowait_time_us).
 This is preventing the governor or the cpufreq driver to account for
 I/O wait and thus use the right pstate
Signed-off-by: default avatarStephane Gasparini <stephane.gasparini@linux.intel.com>
Signed-off-by: default avatarPhilippe Longepe <philippe.longepe@linux.intel.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 09954bad
...@@ -874,7 +874,7 @@ int submit_bio_wait(int rw, struct bio *bio) ...@@ -874,7 +874,7 @@ int submit_bio_wait(int rw, struct bio *bio)
bio->bi_private = &ret; bio->bi_private = &ret;
bio->bi_end_io = submit_bio_wait_endio; bio->bi_end_io = submit_bio_wait_endio;
submit_bio(rw, bio); submit_bio(rw, bio);
wait_for_completion(&ret.event); wait_for_completion_io(&ret.event);
return ret.error; return ret.error;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment