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authorChristoph Hellwig <hch@lst.de>2020-11-23 15:38:40 +0300
committerJens Axboe <axboe@kernel.dk>2020-12-02 00:53:39 +0300
commit4e7b5671c6a883d94b5428e1a9c141bbd56cb2a6 (patch)
tree862980514dedf92e87aa3ec651f5be306f207390 /block/ioctl.c
parent7918f0f6fdafa1e52c2d77c537cb55ef25fb69a3 (diff)
downloadlinux-4e7b5671c6a883d94b5428e1a9c141bbd56cb2a6.tar.xz
block: remove i_bdev
Switch the block device lookup interfaces to directly work with a dev_t so that struct block_device references are only acquired by the blkdev_get variants (and the blk-cgroup special case). This means that we now don't need an extra reference in the inode and can generally simplify handling of struct block_device to keep the lookups contained in the core block layer code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Coly Li <colyli@suse.de> [bcache] Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/ioctl.c')
-rw-r--r--block/ioctl.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index 0c09bb7a6ff3..a6d8171221c7 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -590,8 +590,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
int ret;
void __user *argp = compat_ptr(arg);
- struct inode *inode = file->f_mapping->host;
- struct block_device *bdev = inode->i_bdev;
+ struct block_device *bdev = I_BDEV(file->f_mapping->host);
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
loff_t size;