diff options
author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2016-01-29 13:03:20 +0800 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2016-06-07 18:15:19 +0200 |
commit | 1b8851ec40f7e135c1ff58d8225d4a724a99b757 (patch) | |
tree | 74b0314a604cb1c08a1f96dd09bcf15d59d3a6e5 | |
parent | b2da12034aa1a7bea1b7999b4cc7db862392fae0 (diff) |
btrfs-progs: Introduce function to initialize csum tree
Introduce new function, setup_temp_csum_tree(), to setup temporary
csum tree for make_btrfs_v2().
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r-- | utils.c | 25 |
1 files changed, 25 insertions, 0 deletions
@@ -678,6 +678,28 @@ 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(). * @@ -776,6 +798,9 @@ static int make_convert_btrfs(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: return ret; |