find_free_dev_extent does not properly handle the case: device is not complete free, and there is a free extent at the beginning of the device.
Signed-off-by: Yan Zheng <[email protected]> --- diff -urp 1/fs/btrfs/volumes.c 2/fs/btrfs/volumes.c --- 1/fs/btrfs/volumes.c 2009-07-24 09:57:18.679312973 +0800 +++ 2/fs/btrfs/volumes.c 2009-07-24 11:25:19.381057978 +0800 @@ -758,9 +758,13 @@ static noinline int find_free_dev_extent ret = btrfs_search_slot(trans, root, &key, path, 0, 0); if (ret < 0) goto error; - ret = btrfs_previous_item(root, path, 0, key.type); - if (ret < 0) - goto error; + if (ret > 0) { + ret = btrfs_previous_item(root, path, key.objectid, key.type); + if (ret < 0) + goto error; + if (ret > 0) + start_found = 1; + } l = path->nodes[0]; btrfs_item_key_to_cpu(l, &key, path->slots[0]); while (1) { -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
