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| author | Chris Mason <chris.mason@oracle.com> | 2007-03-23 10:01:08 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-03-23 10:01:08 -0400 |
| commit | d571976292839cec05a2820b08f7629b145ed157 (patch) | |
| tree | 6a3f2f5a9b9c70f61d00ac10edaaaa60d5043474 /fs/btrfs/disk-io.c | |
| parent | 79154b1b5bcf87903db7ff16a30b360b78d6fe4f (diff) | |
| download | lwn-d571976292839cec05a2820b08f7629b145ed157.tar.gz lwn-d571976292839cec05a2820b08f7629b145ed157.zip | |
btrfs_create, btrfs_write_super, btrfs_sync_fs
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 9cacca0c525c..8e1dcda0839c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -145,19 +145,20 @@ struct btrfs_root *open_ctree(struct super_block *sb, int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root) { - return 0; -#if 0 - int ret; - btrfs_set_super_root(s, root->fs_info->tree_root->node->b_blocknr); - - ret = pwrite(root->fs_info->fp, s, sizeof(*s), - BTRFS_SUPER_INFO_OFFSET); - if (ret != sizeof(*s)) { - fprintf(stderr, "failed to write new super block err %d\n", ret); - return ret; + struct buffer_head *bh = root->fs_info->sb_buffer; + btrfs_set_super_root(root->fs_info->disk_super, + root->fs_info->tree_root->node->b_blocknr); + lock_buffer(bh); + clear_buffer_dirty(bh); + bh->b_end_io = end_buffer_write_sync; + get_bh(bh); + submit_bh(WRITE, bh); + wait_on_buffer(bh); + if (!buffer_uptodate(bh)) { + WARN_ON(1); + return -EIO; } return 0; -#endif } int close_ctree(struct btrfs_root *root) |