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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/blk-throttle.c | |
| parent | block: replace bio->bi_issue_stat with bio-specific type (diff) | |
| download | linux-dev-544ccc8dc904db55d4576c27a1eb66a888ffacea.tar.xz linux-dev-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/blk-throttle.c')
| -rw-r--r-- | block/blk-throttle.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 35f9b8ff40d7..f63d88c92c3a 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -2279,8 +2279,7 @@ void blk_throtl_stat_add(struct request *rq, u64 time_ns) struct request_queue *q = rq->q; struct throtl_data *td = q->td; - throtl_track_latency(td, blk_stat_size(&rq->issue_stat), - req_op(rq), time_ns >> 10); + throtl_track_latency(td, rq->throtl_size, req_op(rq), time_ns >> 10); } void blk_throtl_bio_endio(struct bio *bio) |