block/genhd.c: remove useless cast in diskstats_show()

Remove the (unsigned long long) cast in diskstats_show() and adjusts the
seq_printf() format string to 'unsigned long'

diskstats_show() uses part_stat_read() to get the stats, which either
accesses the specified field in the struct disk_stats directly (non SMP)
or sums up the per CPU values in a variable of the same type as the field,
so in any case the result will have the same type and range as the
specified field which for all disk_stats entries is unsigned long

Also, for unsigned long ranges the output of %lu should be identical to
the one of %llu, so no change in the actual proc entry contents.

Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/block/genhd.c b/block/genhd.c
index 5cb51c55f6d8..e2f67902dd02 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1146,17 +1146,17 @@ static int diskstats_show(struct seq_file *seqf, void *v)
                 cpu = part_stat_lock();
                 part_round_stats(cpu, hd);
                 part_stat_unlock();
-                seq_printf(seqf, "%4d %7d %s %lu %lu %llu "
-                           "%u %lu %lu %llu %u %u %u %u\n",
+                seq_printf(seqf, "%4d %7d %s %lu %lu %lu "
+                           "%u %lu %lu %lu %u %u %u %u\n",
                            MAJOR(part_devt(hd)), MINOR(part_devt(hd)),
                            disk_name(gp, hd->partno, buf),
                            part_stat_read(hd, ios[READ]),
                            part_stat_read(hd, merges[READ]),
-                           (unsigned long long)part_stat_read(hd, sectors[READ]),
+                           part_stat_read(hd, sectors[READ]),
                            jiffies_to_msecs(part_stat_read(hd, ticks[READ])),
                            part_stat_read(hd, ios[WRITE]),
                            part_stat_read(hd, merges[WRITE]),
-                           (unsigned long long)part_stat_read(hd, sectors[WRITE]),
+                           part_stat_read(hd, sectors[WRITE]),
                            jiffies_to_msecs(part_stat_read(hd, ticks[WRITE])),
                            part_in_flight(hd),
                            jiffies_to_msecs(part_stat_read(hd, io_ticks)),