diff options
| author |   Christoph Hellwig <hch@lst.de> | 2021-01-24 11:02:34 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-01-24 18:17:20 -0700 |
| commit | 309dca309fc39a9e3c31b916393b74bd174fd74e (patch) | |
| tree | 2d4687a800a52cfd96482c7c01224236da796102 /block/bio.c | |
| parent | dcssblk: remove the end of device check in dcssblk_submit_bio (diff) | |
| download | linux-dev-309dca309fc39a9e3c31b916393b74bd174fd74e.tar.xz linux-dev-309dca309fc39a9e3c31b916393b74bd174fd74e.zip | |
block: store a block_device pointer in struct bio
Replace the gendisk pointer in struct bio with a pointer to the newly
improved struct block device. From that the gendisk can be trivially
accessed with an extra indirection, but it also allows to directly
look up all information related to partition remapping.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bio.c')
| -rw-r--r-- | block/bio.c | 31 |
1 files changed, 11 insertions, 20 deletions
diff --git a/block/bio.c b/block/bio.c index 1f2cc1fbe283..0b70ade17da6 100644 --- a/block/bio.c +++ b/block/bio.c @@ -607,16 +607,7 @@ void bio_truncate(struct bio *bio, unsigned new_size) */ void guard_bio_eod(struct bio *bio) { - sector_t maxsector; - struct block_device *part; - - rcu_read_lock(); - part = __disk_get_part(bio->bi_disk, bio->bi_partno); - if (part) - maxsector = bdev_nr_sectors(part); - else - maxsector = get_capacity(bio->bi_disk); - rcu_read_unlock(); + sector_t maxsector = bdev_nr_sectors(bio->bi_bdev); if (!maxsector) return; @@ -676,11 +667,10 @@ void __bio_clone_fast(struct bio *bio, struct bio *bio_src) BUG_ON(bio->bi_pool && BVEC_POOL_IDX(bio)); /* - * most users will be overriding ->bi_disk with a new target, + * most users will be overriding ->bi_bdev with a new target, * so we don't set nor calculate new physical/hw segment counts here */ - bio->bi_disk = bio_src->bi_disk; - bio->bi_partno = bio_src->bi_partno; + bio->bi_bdev = bio_src->bi_bdev; bio_set_flag(bio, BIO_CLONED); if (bio_flagged(bio_src, BIO_THROTTLED)) bio_set_flag(bio, BIO_THROTTLED); @@ -730,7 +720,7 @@ EXPORT_SYMBOL(bio_clone_fast); const char *bio_devname(struct bio *bio, char *buf) { - return disk_name(bio->bi_disk, bio->bi_partno, buf); + return bdevname(bio->bi_bdev, buf); } EXPORT_SYMBOL(bio_devname); @@ -1037,7 +1027,7 @@ static int __bio_iov_append_get_pages(struct bio *bio, struct iov_iter *iter) { unsigned short nr_pages = bio->bi_max_vecs - bio->bi_vcnt; unsigned short entries_left = bio->bi_max_vecs - bio->bi_vcnt; - struct request_queue *q = bio->bi_disk->queue; + struct request_queue *q = bio->bi_bdev->bd_disk->queue; unsigned int max_append_sectors = queue_max_zone_append_sectors(q); struct bio_vec *bv = bio->bi_io_vec + bio->bi_vcnt; struct page **pages = (struct page **)bv; @@ -1145,7 +1135,8 @@ static void submit_bio_wait_endio(struct bio *bio) */ int submit_bio_wait(struct bio *bio) { - DECLARE_COMPLETION_ONSTACK_MAP(done, bio->bi_disk->lockdep_map); + DECLARE_COMPLETION_ONSTACK_MAP(done, + bio->bi_bdev->bd_disk->lockdep_map); unsigned long hang_check; bio->bi_private = &done; @@ -1422,8 +1413,8 @@ again: if (!bio_integrity_endio(bio)) return; - if (bio->bi_disk) - rq_qos_done_bio(bio->bi_disk->queue, bio); + if (bio->bi_bdev) + rq_qos_done_bio(bio->bi_bdev->bd_disk->queue, bio); /* * Need to have a real endio function for chained bios, otherwise @@ -1438,8 +1429,8 @@ again: goto again; } - if (bio->bi_disk && bio_flagged(bio, BIO_TRACE_COMPLETION)) { - trace_block_bio_complete(bio->bi_disk->queue, bio); + if (bio->bi_bdev && bio_flagged(bio, BIO_TRACE_COMPLETION)) { + trace_block_bio_complete(bio->bi_bdev->bd_disk->queue, bio); bio_clear_flag(bio, BIO_TRACE_COMPLETION); } |