From 544ccc8dc904db55d4576c27a1eb66a888ffacea Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Wed, 9 May 2018 02:08:50 -0700 Subject: 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 Signed-off-by: Jens Axboe --- block/blk-throttle.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'block/blk-throttle.c') 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) -- cgit v1.2.3