diff options
Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r-- | fs/btrfs/volumes.c | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index f532e855b507..f7191fdfb44c 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1258,91 +1258,6 @@ error_bdev_put: return ret; } -/* helper to account the used device space in the range */ -int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start, - u64 end, u64 *length) -{ - struct btrfs_key key; - struct btrfs_root *root = device->fs_info->dev_root; - struct btrfs_dev_extent *dev_extent; - struct btrfs_path *path; - u64 extent_end; - int ret; - int slot; - struct extent_buffer *l; - - *length = 0; - - if (start >= device->total_bytes || - test_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state)) - return 0; - - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; - path->reada = READA_FORWARD; - - key.objectid = device->devid; - key.offset = start; - key.type = BTRFS_DEV_EXTENT_KEY; - - ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); - if (ret < 0) - goto out; - if (ret > 0) { - ret = btrfs_previous_item(root, path, key.objectid, key.type); - if (ret < 0) - goto out; - } - - while (1) { - l = path->nodes[0]; - slot = path->slots[0]; - if (slot >= btrfs_header_nritems(l)) { - ret = btrfs_next_leaf(root, path); - if (ret == 0) - continue; - if (ret < 0) - goto out; - - break; - } - btrfs_item_key_to_cpu(l, &key, slot); - - if (key.objectid < device->devid) - goto next; - - if (key.objectid > device->devid) - break; - - if (key.type != BTRFS_DEV_EXTENT_KEY) - goto next; - - dev_extent = btrfs_item_ptr(l, slot, struct btrfs_dev_extent); - extent_end = key.offset + btrfs_dev_extent_length(l, - dev_extent); - if (key.offset <= start && extent_end > end) { - *length = end - start + 1; - break; - } else if (key.offset <= start && extent_end > start) - *length += extent_end - start; - else if (key.offset > start && extent_end <= end) - *length += extent_end - key.offset; - else if (key.offset > start && key.offset <= end) { - *length += end - key.offset + 1; - break; - } else if (key.offset > end) - break; - -next: - path->slots[0]++; - } - ret = 0; -out: - btrfs_free_path(path); - return ret; -} - static int contains_pending_extent(struct btrfs_transaction *transaction, struct btrfs_device *device, u64 *start, u64 len) |