diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-11-27 16:43:51 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-01 14:53:40 -0700 |
| commit | 0d02129e76edf91cf04fabf1efbc3a9a1f1d729a (patch) | |
| tree | 20fd7e1e54d4430038eb74d8e276decee65ee7c3 /block/blk-cgroup.c | |
| parent | 9499ffc7521742e3fea32f6ac6c1213b6fc4e914 (diff) | |
block: merge struct block_device and struct hd_struct
Instead of having two structures that represent each block device with
different life time rules, merge them into a single one. This also
greatly simplifies the reference counting rules, as we can use the inode
reference count as the main reference count for the new struct
block_device, with the device model reference front ending it for device
model interaction.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 79aa96240cec..031114d454a6 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -820,9 +820,9 @@ static void blkcg_fill_root_iostats(void) class_dev_iter_init(&iter, &block_class, NULL, &disk_type); while ((dev = class_dev_iter_next(&iter))) { - struct gendisk *disk = dev_to_disk(dev); - struct hd_struct *part = disk_get_part(disk, 0); - struct blkcg_gq *blkg = blk_queue_root_blkg(disk->queue); + struct block_device *bdev = dev_to_bdev(dev); + struct blkcg_gq *blkg = + blk_queue_root_blkg(bdev->bd_disk->queue); struct blkg_iostat tmp; int cpu; @@ -830,7 +830,7 @@ static void blkcg_fill_root_iostats(void) for_each_possible_cpu(cpu) { struct disk_stats *cpu_dkstats; - cpu_dkstats = per_cpu_ptr(part->bdev->bd_stats, cpu); + cpu_dkstats = per_cpu_ptr(bdev->bd_stats, cpu); tmp.ios[BLKG_IOSTAT_READ] += cpu_dkstats->ios[STAT_READ]; tmp.ios[BLKG_IOSTAT_WRITE] += |