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block: move two helpers into bdev.c

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disk_live() and block_size() access bd_inode directly, prepare to remove
the field bd_inode from block_device, and only access bd_inode in block
layer.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/20240411145346.2516848-8-viro@zeniv.linux.org.uk
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Yu Kuai 2024-04-11 15:53:43 +01:00 committed by Al Viro
parent c9600c63a6
commit 186ddac207
2 changed files with 14 additions and 10 deletions
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12
block/bdev.c
View file

@ -1257,6 +1257,18 @@ void bdev_statx_dioalign(struct inode *inode, struct kstat *stat)
blkdev_put_no_open(bdev);
}
bool disk_live(struct gendisk *disk)
{
return !inode_unhashed(disk->part0->bd_inode);
}
EXPORT_SYMBOL_GPL(disk_live);
unsigned int block_size(struct block_device *bdev)
{
return 1 << bdev->bd_inode->i_blkbits;
}
EXPORT_SYMBOL_GPL(block_size);
static int __init setup_bdev_allow_write_mounted(char *str)
{
if (kstrtobool(str, &bdev_allow_write_mounted))

12
include/linux/blkdev.h
View file

@ -211,11 +211,6 @@ struct gendisk {
struct blk_independent_access_ranges *ia_ranges;
};
static inline bool disk_live(struct gendisk *disk)
{
return !inode_unhashed(disk->part0->bd_inode);
}
/**
* disk_openers - returns how many openers are there for a disk
* @disk: disk to check
@ -1364,11 +1359,6 @@ static inline unsigned int blksize_bits(unsigned int size)
return order_base_2(size >> SECTOR_SHIFT) + SECTOR_SHIFT;
}
static inline unsigned int block_size(struct block_device *bdev)
{
return 1 << bdev->bd_inode->i_blkbits;
}
int kblockd_schedule_work(struct work_struct *work);
int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);
@ -1536,6 +1526,8 @@ void blkdev_put_no_open(struct block_device *bdev);
struct block_device *I_BDEV(struct inode *inode);
struct block_device *file_bdev(struct file *bdev_file);
bool disk_live(struct gendisk *disk);
unsigned int block_size(struct block_device *bdev);
#ifdef CONFIG_BLOCK
void invalidate_bdev(struct block_device *bdev);