block: use nanosecond resolution for iostat

[linux-2.6-microblaze.git] / block / blk-core.c

diff --git a/block/blk-core.c b/block/blk-core.c
index 4dbc93f..cff0a60 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2733,17 +2733,15 @@ void blk_account_io_done(struct request *req, u64 now)
         * containing request is enough.
         */
        if (blk_do_io_stat(req) && !(req->rq_flags & RQF_FLUSH_SEQ)) {
-               unsigned long duration;
                const int sgrp = op_stat_group(req_op(req));
                struct hd_struct *part;
                int cpu;
 
-               duration = nsecs_to_jiffies(now - req->start_time_ns);
                cpu = part_stat_lock();
                part = req->part;
 
                part_stat_inc(cpu, part, ios[sgrp]);
-               part_stat_add(cpu, part, ticks[sgrp], duration);
+               part_stat_add(cpu, part, nsecs[sgrp], now - req->start_time_ns);
                part_round_stats(req->q, cpu, part);
                part_dec_in_flight(req->q, part, rq_data_dir(req));