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| author |   Stephen Bates <sbates@raithlin.com> | 2017-04-20 16:59:11 -0600 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2017-04-20 17:10:48 -0600 |
| commit | 0206319fdfee7c36b97aa6c0561bab206132f813 (patch) | |
| tree | b7338a78b1162079ed46003cadb5206d7672e235 /include/linux/blkdev.h | |
| parent | blk-mq: fix schedule-while-atomic with scheduler attached (diff) | |
| download | linux-dev-0206319fdfee7c36b97aa6c0561bab206132f813.tar.xz linux-dev-0206319fdfee7c36b97aa6c0561bab206132f813.zip | |
blk-mq: Fix poll_stat for new size-based bucketing.
Fixes an issue where the size of the poll_stat array in request_queue
does not match the size expected by the new size based bucketing for
IO completion polling.
Fixes: 720b8ccc4500 ("blk-mq: Add a polling specific stats function")
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/blkdev.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 6c4ab0d4a160..6c247861cb66 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -46,6 +46,9 @@ struct blk_stat_callback; #define BLKDEV_MIN_RQ 4 #define BLKDEV_MAX_RQ 128 /* Default maximum */ +/* Must be consisitent with blk_mq_poll_stats_bkt() */ +#define BLK_MQ_POLL_STATS_BKTS 16 + /* * Maximum number of blkcg policies allowed to be registered concurrently. * Defined here to simplify include dependency. @@ -517,7 +520,7 @@ struct request_queue { int poll_nsec; struct blk_stat_callback *poll_cb; - struct blk_rq_stat poll_stat[2]; + struct blk_rq_stat poll_stat[BLK_MQ_POLL_STATS_BKTS]; struct timer_list timeout; struct work_struct timeout_work; |