[V5,1/9] block: add a helper function to read nr_setcs
diff mbox series

Message ID 20190821061423.3408-2-chaitanya.kulkarni@wdc.com
State New
Headers show
Series
  • block: use right accessor to read nr_sects
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Commit Message

Chaitanya Kulkarni Aug. 21, 2019, 6:14 a.m. UTC
This patch introduces helper function to read the number of sectors
from struct block_device->bd_part member. For more details Please refer
to the comment in the include/linux/genhd.h for part_nr_sects_read().

Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 include/linux/blkdev.h | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Bart Van Assche Aug. 21, 2019, 3:18 p.m. UTC | #1
On 8/20/19 11:14 PM, Chaitanya Kulkarni wrote:
> This patch introduces helper function to read the number of sectors
> from struct block_device->bd_part member. For more details Please refer
> to the comment in the include/linux/genhd.h for part_nr_sects_read().
> 
> Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
                                                    ^^^^^^^^^^
This looks weird.

Patch
diff mbox series

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 4798bb25f1ee..aa5801c8ff73 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1468,6 +1468,11 @@  static inline void put_dev_sector(Sector p)
 	put_page(p.v);
 }
 
+static inline sector_t bdev_nr_sects(struct block_device *bdev)
+{
+	return part_nr_sects_read(bdev->bd_part);
+}
+
 int kblockd_schedule_work(struct work_struct *work);
 int kblockd_schedule_work_on(int cpu, struct work_struct *work);
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);