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-rw-r--r--block/blk-stat.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/block/blk-stat.c b/block/blk-stat.c
index e77ec52f5bb5..dde9d399f707 100644
--- a/block/blk-stat.c
+++ b/block/blk-stat.c
@@ -19,7 +19,7 @@ struct blk_queue_stats {
bool enable_accounting;
};
-unsigned int blk_stat_rq_ddir(const struct request *rq)
+int blk_stat_rq_ddir(const struct request *rq)
{
return rq_data_dir(rq);
}
@@ -104,6 +104,8 @@ void blk_stat_add(struct request *rq)
list_for_each_entry_rcu(cb, &q->stats->callbacks, list) {
if (blk_stat_is_active(cb)) {
bucket = cb->bucket_fn(rq);
+ if (bucket < 0)
+ continue;
stat = &this_cpu_ptr(cb->cpu_stat)[bucket];
__blk_stat_add(stat, value);
}
@@ -135,7 +137,7 @@ static void blk_stat_timer_fn(unsigned long data)
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)
{
struct blk_stat_callback *cb;