From 99dfc43ecbf67f12a06512918aaba61d55863efc Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 24 Jan 2021 11:02:37 +0100 Subject: block: use ->bi_bdev for bio based I/O accounting Rework the I/O accounting for bio based drivers to use ->bi_bdev. This means all drivers can now simply use bio_start_io_acct to start accounting, and it will take partitions into account automatically. To end I/O account either bio_end_io_acct can be used if the driver never remaps I/O to a different device, or bio_end_io_acct_remapped if the driver did remap the I/O. Signed-off-by: Christoph Hellwig Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) (limited to 'include/linux/blkdev.h') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b55bd534b2e1..4526b9ef8edb 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1954,22 +1954,9 @@ unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors, void disk_end_io_acct(struct gendisk *disk, unsigned int op, unsigned long start_time); -unsigned long part_start_io_acct(struct gendisk *disk, - struct block_device **part, struct bio *bio); -void part_end_io_acct(struct block_device *part, struct bio *bio, - unsigned long start_time); - -/** - * bio_start_io_acct - start I/O accounting for bio based drivers - * @bio: bio to start account for - * - * Returns the start time that should be passed back to bio_end_io_acct(). - */ -static inline unsigned long bio_start_io_acct(struct bio *bio) -{ - return disk_start_io_acct(bio->bi_bdev->bd_disk, bio_sectors(bio), - bio_op(bio)); -} +unsigned long bio_start_io_acct(struct bio *bio); +void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time, + struct block_device *orig_bdev); /** * bio_end_io_acct - end I/O accounting for bio based drivers @@ -1978,7 +1965,7 @@ static inline unsigned long bio_start_io_acct(struct bio *bio) */ static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time) { - return disk_end_io_acct(bio->bi_bdev->bd_disk, bio_op(bio), start_time); + return bio_end_io_acct_remapped(bio, start_time, bio->bi_bdev); } int bdev_read_only(struct block_device *bdev); -- cgit v1.2.3