diff options
Diffstat (limited to 'block/blk-stat.h')
| -rw-r--r-- | block/blk-stat.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/block/blk-stat.h b/block/blk-stat.h index 53f08a63bf152..622a62ce6213b 100644 --- a/block/blk-stat.h +++ b/block/blk-stat.h @@ -48,9 +48,10 @@ struct blk_stat_callback { /** * @bucket_fn: Given a request, returns which statistics bucket it - * should be accounted under. + * should be accounted under. Return -1 for no bucket for this + * request. */ - unsigned int (*bucket_fn)(const struct request *); + int (*bucket_fn)(const struct request *); /** * @buckets: Number of statistics buckets. @@ -120,7 +121,7 @@ void blk_stat_enable_accounting(struct request_queue *q); * * Return: Data direction of the request, either READ or WRITE. */ -unsigned int blk_stat_rq_ddir(const struct request *rq); +int blk_stat_rq_ddir(const struct request *rq); /** * blk_stat_alloc_callback() - Allocate a block statistics callback. @@ -135,7 +136,7 @@ unsigned int blk_stat_rq_ddir(const struct request *rq); */ struct blk_stat_callback * blk_stat_alloc_callback(void (*timer_fn)(struct blk_stat_callback *), - unsigned int (*bucket_fn)(const struct request *), + int (*bucket_fn)(const struct request *), unsigned int buckets, void *data); /** |