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btrfs: use bdev_nr_bytes instead of open coding it
Use the proper helper to read the block device size. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Acked-by: David Sterba <dsterba@suse.com> Link: https://lore.kernel.org/r/20211018101130.1838532-13-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -283,8 +283,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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}
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if (i_size_read(bdev->bd_inode) <
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btrfs_device_get_total_bytes(srcdev)) {
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if (bdev_nr_bytes(bdev) < btrfs_device_get_total_bytes(srcdev)) {
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btrfs_err(fs_info,
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"target device is smaller than source device!");
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ret = -EINVAL;
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@ -3740,7 +3740,7 @@ struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev,
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else if (ret)
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return ERR_PTR(ret);
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if (bytenr + BTRFS_SUPER_INFO_SIZE >= i_size_read(bdev->bd_inode))
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if (bytenr + BTRFS_SUPER_INFO_SIZE >= bdev_nr_bytes(bdev))
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return ERR_PTR(-EINVAL);
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page = read_cache_page_gfp(mapping, bytenr >> PAGE_SHIFT, GFP_NOFS);
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@ -1730,7 +1730,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
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}
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if (!strcmp(sizestr, "max"))
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new_size = device->bdev->bd_inode->i_size;
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new_size = bdev_nr_bytes(device->bdev);
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else {
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if (sizestr[0] == '-') {
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mod = -1;
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@ -1771,7 +1771,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
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ret = -EINVAL;
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goto out_finish;
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}
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if (new_size > device->bdev->bd_inode->i_size) {
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if (new_size > bdev_nr_bytes(device->bdev)) {
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ret = -EFBIG;
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goto out_finish;
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}
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@ -1286,7 +1286,7 @@ static struct btrfs_super_block *btrfs_read_disk_super(struct block_device *bdev
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pgoff_t index;
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/* make sure our super fits in the device */
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if (bytenr + PAGE_SIZE >= i_size_read(bdev->bd_inode))
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if (bytenr + PAGE_SIZE >= bdev_nr_bytes(bdev))
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return ERR_PTR(-EINVAL);
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/* make sure our super fits in the page */
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@ -2610,8 +2610,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
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device->io_width = fs_info->sectorsize;
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device->io_align = fs_info->sectorsize;
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device->sector_size = fs_info->sectorsize;
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device->total_bytes = round_down(i_size_read(bdev->bd_inode),
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fs_info->sectorsize);
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device->total_bytes =
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round_down(bdev_nr_bytes(bdev), fs_info->sectorsize);
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device->disk_total_bytes = device->total_bytes;
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device->commit_total_bytes = device->total_bytes;
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set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
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@ -7236,7 +7236,7 @@ static int read_one_dev(struct extent_buffer *leaf,
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fill_device_from_item(leaf, dev_item, device);
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if (device->bdev) {
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u64 max_total_bytes = i_size_read(device->bdev->bd_inode);
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u64 max_total_bytes = bdev_nr_bytes(device->bdev);
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if (device->total_bytes > max_total_bytes) {
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btrfs_err(fs_info,
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