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block: remove bdgrab

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All callers are gone, and no one should grab a pure inode reference to
a block device anymore.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/20210722075402.983367-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-07-22 09:54:01 +02:00 committed by Jens Axboe
parent 4b2731226d
commit 14cf1dbb55
2 changed files with 0 additions and 16 deletions
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15
fs/block_dev.c
View File

@ -921,21 +921,6 @@ void bdev_add(struct block_device *bdev, dev_t dev)
insert_inode_hash(bdev->bd_inode); insert_inode_hash(bdev->bd_inode);
} }
/**
* bdgrab -- Grab a reference to an already referenced block device
* @bdev: Block device to grab a reference to.
*
* Returns the block_device with an additional reference when successful,
* or NULL if the inode is already beeing freed.
*/
struct block_device *bdgrab(struct block_device *bdev)
{
if (!igrab(bdev->bd_inode))
return NULL;
return bdev;
}
EXPORT_SYMBOL(bdgrab);
long nr_blockdev_pages(void) long nr_blockdev_pages(void)
{ {
struct inode *inode; struct inode *inode;

1
include/linux/blkdev.h
View File

@ -1984,7 +1984,6 @@ void blkdev_put_no_open(struct block_device *bdev);
struct block_device *bdev_alloc(struct gendisk *disk, u8 partno); struct block_device *bdev_alloc(struct gendisk *disk, u8 partno);
void bdev_add(struct block_device *bdev, dev_t dev); void bdev_add(struct block_device *bdev, dev_t dev);
struct block_device *I_BDEV(struct inode *inode); struct block_device *I_BDEV(struct inode *inode);
struct block_device *bdgrab(struct block_device *bdev);
void bdput(struct block_device *); void bdput(struct block_device *);
int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart, int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart,
loff_t lend); loff_t lend);