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block: Get rid of blk_get_backing_dev_info()

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blk_get_backing_dev_info() is now a simple dereference. Remove that
function and simplify some code around that.

Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jan Kara 2017-02-02 15:56:53 +01:00 • committed by Jens Axboe
commit efa7c9f97e
9 changed files with 8 additions and 31 deletions
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7
block/ioctl.c
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@ -505,7 +505,6 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
unsigned long arg)
{
struct backing_dev_info *bdi;
void __user *argp = (void __user *)arg;
loff_t size;
unsigned int max_sectors;
@ -532,8 +531,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKFRAGET:
if (!arg)
return -EINVAL;
bdi = blk_get_backing_dev_info(bdev);
return put_long(arg, (bdi->ra_pages * PAGE_SIZE) / 512);
return put_long(arg, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);
case BLKROGET:
return put_int(arg, bdev_read_only(bdev) != 0);
case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */
@ -560,8 +558,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKFRASET:
if(!capable(CAP_SYS_ADMIN))
return -EACCES;
bdi = blk_get_backing_dev_info(bdev);
bdi->ra_pages = (arg * 512) / PAGE_SIZE;
bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;
return 0;
case BLKBSZSET:
return blkdev_bszset(bdev, mode, argp);