ubifs: Remove dead code from ubifs_get_link()

[karo-tx-linux.git] / fs / block_dev.c

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 2a305c1a2d881a78e8251288908a7bafcc840af9..519599dddd3692ee373a9eb00d95d5757556ad42 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -717,72 +717,6 @@ int bdev_write_page(struct block_device *bdev, sector_t sector,
 }
 EXPORT_SYMBOL_GPL(bdev_write_page);
 
-int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,
-               pgoff_t *pgoff)
-{
-       phys_addr_t phys_off = (get_start_sect(bdev) + sector) * 512;
-
-       if (pgoff)
-               *pgoff = PHYS_PFN(phys_off);
-       if (phys_off % PAGE_SIZE || size % PAGE_SIZE)
-               return -EINVAL;
-       return 0;
-}
-EXPORT_SYMBOL(bdev_dax_pgoff);
-
-/**
- * bdev_dax_supported() - Check if the device supports dax for filesystem
- * @sb: The superblock of the device
- * @blocksize: The block size of the device
- *
- * This is a library function for filesystems to check if the block device
- * can be mounted with dax option.
- *
- * Return: negative errno if unsupported, 0 if supported.
- */
-int bdev_dax_supported(struct super_block *sb, int blocksize)
-{
-       struct block_device *bdev = sb->s_bdev;
-       struct dax_device *dax_dev;
-       pgoff_t pgoff;
-       int err, id;
-       void *kaddr;
-       pfn_t pfn;
-       long len;
-
-       if (blocksize != PAGE_SIZE) {
-               vfs_msg(sb, KERN_ERR, "error: unsupported blocksize for dax");
-               return -EINVAL;
-       }
-
-       err = bdev_dax_pgoff(bdev, 0, PAGE_SIZE, &pgoff);
-       if (err) {
-               vfs_msg(sb, KERN_ERR, "error: unaligned partition for dax");
-               return err;
-       }
-
-       dax_dev = dax_get_by_host(bdev->bd_disk->disk_name);
-       if (!dax_dev) {
-               vfs_msg(sb, KERN_ERR, "error: device does not support dax");
-               return -EOPNOTSUPP;
-       }
-
-       id = dax_read_lock();
-       len = dax_direct_access(dax_dev, pgoff, 1, &kaddr, &pfn);
-       dax_read_unlock(id);
-
-       put_dax(dax_dev);
-
-       if (len < 1) {
-               vfs_msg(sb, KERN_ERR,
-                               "error: dax access failed (%ld)", len);
-               return len < 0 ? len : -EIO;
-       }
-
-       return 0;
-}
-EXPORT_SYMBOL_GPL(bdev_dax_supported);
-
 /*
  * pseudo-fs
  */