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authorOmar Sandoval <osandov@fb.com>2018-05-09 02:08:50 -0700
committerJens Axboe <axboe@kernel.dk>2018-05-09 08:33:05 -0600
commit544ccc8dc904db55d4576c27a1eb66a888ffacea (patch)
tree5fa92e3cf1a5d33eddc61dfd65d088dd5cdb6f84 /block/blk-throttle.c
parent5238dcf4136fd7287be8e7d38752645bfa5782ec (diff)
downloadlinux-0-day-544ccc8dc904db55d4576c27a1eb66a888ffacea.tar.gz
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.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 35f9b8f..f63d88c 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)