Introduce new function, setup_temp_csum_tree(), to setup temporary
csum tree for make_btrfs_v2().
Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
---
utils.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/utils.c b/utils.c
index edd8ac1..ee2a538 100644
--- a/utils.c
+++ b/utils.c
@@ -862,6 +862,28 @@ out:
return ret;
}
+static int setup_temp_csum_tree(int fd, struct btrfs_mkfs_config *cfg,
+ u64 csum_bytenr)
+{
+ struct extent_buffer *buf = NULL;
+ int ret;
+
+ buf = malloc(sizeof(*buf) + cfg->nodesize);
+ if (!buf)
+ return -ENOMEM;
+ ret = setup_temp_extent_buffer(buf, cfg, csum_bytenr,
+ BTRFS_CSUM_TREE_OBJECTID);
+ if (ret < 0)
+ goto out;
+ /*
+ * Temporary csum tree is completely empty.
+ */
+ ret = write_temp_extent_buffer(fd, buf, csum_bytenr);
+out:
+ free(buf);
+ return ret;
+}
+
/*
* Improved version of make_btrfs().
*
@@ -959,6 +981,9 @@ static int make_btrfs_v2(int fd, struct btrfs_mkfs_config
*cfg)
if (ret < 0)
goto out;
ret = setup_temp_fs_tree(fd, cfg, fs_bytenr);
+ if (ret < 0)
+ goto out;
+ ret = setup_temp_csum_tree(fd, cfg, csum_bytenr);
out:
free(free_tree);
--
2.6.2
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