marko10_000
/
btrfs-progs
forked from Mirrors/btrfs-progs
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

btrfs-progs: Introduce function to initialize fs tree 

Introudce new function, setup_temp_fs_tree(), to setup temporary fs tree
for make_btrfs_v2().

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Qu Wenruo 2016-01-29 13:03:19 +08:00 committed by David Sterba
parent f0a81c88d0
commit b2da12034a
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
utils.c
View File

@ -656,6 +656,28 @@ out:
return ret;
}
static int setup_temp_fs_tree(int fd, struct btrfs_mkfs_config *cfg,
u64 fs_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, fs_bytenr,
BTRFS_FS_TREE_OBJECTID);
if (ret < 0)
goto out;
/*
* Temporary fs tree is completely empty.
*/
ret = write_temp_extent_buffer(fd, buf, fs_bytenr);
out:
free(buf);
return ret;
}
/*
* Improved version of make_btrfs().
*
@ -751,6 +773,10 @@ static int make_convert_btrfs(int fd, struct btrfs_mkfs_config *cfg,
goto out;
ret = setup_temp_dev_tree(fd, cfg, sys_chunk_start, meta_chunk_start,
dev_bytenr);
if (ret < 0)
goto out;
ret = setup_temp_fs_tree(fd, cfg, fs_bytenr);
out:
return ret;
}