diff options
| 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-wbt.h | |
| parent | 5238dcf4136fd7287be8e7d38752645bfa5782ec (diff) | |
| download | linux-544ccc8dc904db55d4576c27a1eb66a888ffacea.tar.bz2 | |
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-wbt.h')
| -rw-r--r-- | block/blk-wbt.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-wbt.h b/block/blk-wbt.h index 85fbcccf12a5..300df531d0a6 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -63,7 +63,7 @@ struct rq_wb { struct blk_stat_callback *cb; - s64 sync_issue; + u64 sync_issue; void *sync_cookie; unsigned int wc; @@ -90,7 +90,7 @@ static inline unsigned int wbt_inflight(struct rq_wb *rwb) static inline void wbt_track(struct request *rq, enum wbt_flags flags) { - rq->issue_stat.stat |= ((u64)flags) << BLK_STAT_RES_SHIFT; + rq->wbt_flags |= flags; } void __wbt_done(struct rq_wb *, enum wbt_flags); |