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authorToshi Kani <toshi.kani@hpe.com>2016-10-19 17:19:44 +0300
committerDan Williams <dan.j.williams@intel.com>2016-10-19 18:53:26 +0300
commit8d7c22ac0c036978a072b7e13c607b5402c474e0 (patch)
treeb50717d21aa2beffb83beadde1b2c232c41e17c9
parent1001354ca34179f3db924eb66672442a173147dc (diff)
downloadlinux-8d7c22ac0c036978a072b7e13c607b5402c474e0.tar.xz
libnvdimm: use generic iostat interfaces
nd_iostat_start() and nd_iostat_end() implement the same functionality that generic_start_io_acct() and generic_end_io_acct() already provide. Change nd_iostat_start() and nd_iostat_end() to call the generic iostat interfaces. There is no change in the nd interfaces. Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--drivers/nvdimm/core.c29
-rw-r--r--drivers/nvdimm/nd.h11
2 files changed, 9 insertions, 31 deletions
diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c
index 7ceba08774b6..9303cfeb8bee 100644
--- a/drivers/nvdimm/core.c
+++ b/drivers/nvdimm/core.c
@@ -317,35 +317,6 @@ ssize_t nd_sector_size_store(struct device *dev, const char *buf,
}
}
-void __nd_iostat_start(struct bio *bio, unsigned long *start)
-{
- struct gendisk *disk = bio->bi_bdev->bd_disk;
- const int rw = bio_data_dir(bio);
- int cpu = part_stat_lock();
-
- *start = jiffies;
- part_round_stats(cpu, &disk->part0);
- part_stat_inc(cpu, &disk->part0, ios[rw]);
- part_stat_add(cpu, &disk->part0, sectors[rw], bio_sectors(bio));
- part_inc_in_flight(&disk->part0, rw);
- part_stat_unlock();
-}
-EXPORT_SYMBOL(__nd_iostat_start);
-
-void nd_iostat_end(struct bio *bio, unsigned long start)
-{
- struct gendisk *disk = bio->bi_bdev->bd_disk;
- unsigned long duration = jiffies - start;
- const int rw = bio_data_dir(bio);
- int cpu = part_stat_lock();
-
- part_stat_add(cpu, &disk->part0, ticks[rw], duration);
- part_round_stats(cpu, &disk->part0);
- part_dec_in_flight(&disk->part0, rw);
- part_stat_unlock();
-}
-EXPORT_SYMBOL(nd_iostat_end);
-
static ssize_t commands_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index d3b2fca8deec..065abf1b8f32 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -377,10 +377,17 @@ static inline bool nd_iostat_start(struct bio *bio, unsigned long *start)
if (!blk_queue_io_stat(disk->queue))
return false;
- __nd_iostat_start(bio, start);
+ *start = jiffies;
+ generic_start_io_acct(bio_data_dir(bio),
+ bio_sectors(bio), &disk->part0);
return true;
}
-void nd_iostat_end(struct bio *bio, unsigned long start);
+static inline void nd_iostat_end(struct bio *bio, unsigned long start)
+{
+ struct gendisk *disk = bio->bi_bdev->bd_disk;
+
+ generic_end_io_acct(bio_data_dir(bio), &disk->part0, start);
+}
static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
unsigned int len)
{