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| author | Omar Sandoval <osandov@fb.com> | 2018-05-09 02:08:50 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-05-09 08:33:05 -0600 |
| commit | 544ccc8dc904db55d4576c27a1eb66a888ffacea (patch) | |
| tree | 5fa92e3cf1a5d33eddc61dfd65d088dd5cdb6f84 /block/kyber-iosched.c | |
| parent | 5238dcf4136fd7287be8e7d38752645bfa5782ec (diff) | |
| download | linux-544ccc8dc904db55d4576c27a1eb66a888ffacea.tar.gz linux-544ccc8dc904db55d4576c27a1eb66a888ffacea.tar.bz2 linux-544ccc8dc904db55d4576c27a1eb66a888ffacea.zip | |
block: get rid of struct blk_issue_stat
struct blk_issue_stat squashes three things into one u64:
- The time the driver started working on a request
- The original size of the request (for the io.low controller)
- Flags for writeback throttling
It turns out that on x86_64, we have a 4 byte hole in struct request
which we can fill with the non-timestamp fields from blk_issue_stat,
simplifying things quite a bit.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/kyber-iosched.c')
| -rw-r--r-- | block/kyber-iosched.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c index 0d6d25e32e1f..564967fafe5f 100644 --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -485,11 +485,11 @@ static void kyber_completed_request(struct request *rq) if (blk_stat_is_active(kqd->cb)) return; - now = __blk_stat_time(ktime_to_ns(ktime_get())); - if (now < blk_stat_time(&rq->issue_stat)) + now = ktime_get_ns(); + if (now < rq->io_start_time_ns) return; - latency = now - blk_stat_time(&rq->issue_stat); + latency = now - rq->io_start_time_ns; if (latency > target) blk_stat_activate_msecs(kqd->cb, 10); |