block: Get rid of blk_get_backing_dev_info()
blk_get_backing_dev_info() is now a simple dereference. Remove that
function and simplify some code around that.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-core.c b/block/blk-core.c
index 6375674..a3c2927 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -105,20 +105,6 @@ void blk_queue_congestion_threshold(struct request_queue *q)
q->nr_congestion_off = nr;
}
-/**
- * blk_get_backing_dev_info - get the address of a queue's backing_dev_info
- * @bdev: device
- *
- * Locates the passed device's request queue and returns the address of its
- * backing_dev_info. The return value is never NULL however we may return
- * &noop_backing_dev_info if the bdev is not currently open.
- */
-struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
-{
- return bdev->bd_bdi;
-}
-EXPORT_SYMBOL(blk_get_backing_dev_info);
-
void blk_rq_init(struct request_queue *q, struct request *rq)
{
memset(rq, 0, sizeof(*rq));
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 556826a..570021a 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -661,7 +661,6 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
struct block_device *bdev = inode->i_bdev;
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
- struct backing_dev_info *bdi;
loff_t size;
unsigned int max_sectors;
@@ -708,9 +707,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKFRAGET:
if (!arg)
return -EINVAL;
- bdi = blk_get_backing_dev_info(bdev);
return compat_put_long(arg,
- (bdi->ra_pages * PAGE_SIZE) / 512);
+ (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);
case BLKROGET: /* compatible */
return compat_put_int(arg, bdev_read_only(bdev) != 0);
case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */
@@ -728,8 +726,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
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 BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
diff --git a/block/ioctl.c b/block/ioctl.c
index be7f4de..7b88820 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -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);
