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authorChristoph Hellwig <hch@lst.de>2021-05-25 08:12:59 +0200
committerJens Axboe <axboe@kernel.dk>2021-06-01 07:45:27 -0600
commitab4b57057d744861f670b47b163209727b26418b (patch)
tree2d978987284bb49a1b3b466fabdb62f680694210
parentc8276b954d2dacbabe587c0421a9344529af5bad (diff)
block: move bd_part_count to struct gendisk
The bd_part_count value only makes sense for whole devices, so move it to struct gendisk and give it a more descriptive name. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20210525061301.2242282-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/ioctl.c2
-rw-r--r--fs/block_dev.c6
-rw-r--r--include/linux/blk_types.h3
-rw-r--r--include/linux/genhd.h1
4 files changed, 5 insertions, 7 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index 8ba1ed8defd0..24beec9ca9c9 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -89,7 +89,7 @@ static int blkdev_reread_part(struct block_device *bdev, fmode_t mode)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (bdev->bd_part_count)
+ if (bdev->bd_disk->open_partitions)
return -EBUSY;
/*
diff --git a/fs/block_dev.c b/fs/block_dev.c
index cd45b54e86b4..ac9b3c158a77 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1253,7 +1253,7 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate)
return -ENXIO;
rescan:
- if (bdev->bd_part_count)
+ if (disk->open_partitions)
return -EBUSY;
sync_blockdev(bdev);
invalidate_bdev(bdev);
@@ -1348,7 +1348,7 @@ static int blkdev_get_part(struct block_device *part, fmode_t mode)
if (!bdev_nr_sectors(part))
goto out_blkdev_put;
- whole->bd_part_count++;
+ disk->open_partitions++;
set_init_blocksize(part);
if (part->bd_bdi == &noop_backing_dev_info)
part->bd_bdi = bdi_get(disk->queue->backing_dev_info);
@@ -1370,7 +1370,7 @@ static void blkdev_put_part(struct block_device *part, fmode_t mode)
if (--part->bd_openers)
return;
blkdev_flush_mapping(part);
- whole->bd_part_count--;
+ whole->bd_disk->open_partitions--;
blkdev_put_whole(whole, mode);
bdput(whole);
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index a09660671fa4..fd3860d18d7e 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -39,9 +39,6 @@ struct block_device {
#endif
struct kobject *bd_holder_dir;
u8 bd_partno;
- /* number of times partitions within this device have been opened. */
- unsigned bd_part_count;
-
spinlock_t bd_size_lock; /* for bd_inode->i_size updates */
struct gendisk * bd_disk;
struct backing_dev_info *bd_bdi;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 1fabb1559110..47d4605c0e7e 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -156,6 +156,7 @@ struct gendisk {
#define GD_QUEUE_REF 2
struct mutex open_mutex; /* open/close mutex */
+ unsigned open_partitions; /* number of open partitions */
struct kobject *slave_dir;