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Btrfs: uuids

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-05 14:28:50 -04:00
committed by David Woodhouse
parent 5be6f7f174
commit 3eb0314dc1
3 changed files with 13 additions and 4 deletions
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12
fs/btrfs/ctree.c
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@ -200,6 +200,10 @@ static int check_leaf(struct btrfs_root *root, struct btrfs_path *path,
static int check_block(struct btrfs_root *root, struct btrfs_path *path,
int level)
{
struct btrfs_node *node = btrfs_buffer_node(path->nodes[level]);
if (memcmp(node->header.fsid, root->fs_info->disk_super->fsid,
sizeof(node->header.fsid)))
BUG();
if (level == 0)
return check_leaf(root, path, level);
return check_node(root, path, level);
@ -687,6 +691,8 @@ static int insert_new_root(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_set_header_parentid(&c->header,
btrfs_header_parentid(btrfs_buffer_header(root->node)));
lower = btrfs_buffer_node(path->nodes[level-1]);
memcpy(c->header.fsid, root->fs_info->disk_super->fsid,
sizeof(c->header.fsid));
if (btrfs_is_leaf(lower))
lower_key = &((struct btrfs_leaf *)lower)->items[0].key;
else
@ -780,6 +786,8 @@ static int split_node(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_set_header_generation(&split->header, trans->transid);
btrfs_set_header_parentid(&split->header,
btrfs_header_parentid(btrfs_buffer_header(root->node)));
memcpy(split->header.fsid, root->fs_info->disk_super->fsid,
sizeof(split->header.fsid));
mid = (c_nritems + 1) / 2;
btrfs_memcpy(root, split, split->ptrs, c->ptrs + mid,
(c_nritems - mid) * sizeof(struct btrfs_key_ptr));
@ -1139,6 +1147,8 @@ static int split_leaf(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_set_header_level(&right->header, 0);
btrfs_set_header_parentid(&right->header,
btrfs_header_parentid(btrfs_buffer_header(root->node)));
memcpy(right->header.fsid, root->fs_info->disk_super->fsid,
sizeof(right->header.fsid));
if (mid <= slot) {
if (nritems == 1 ||
leaf_space_used(l, mid, nritems - mid) + space_needed >
@ -1229,6 +1239,8 @@ static int split_leaf(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_set_header_level(&right->header, 0);
btrfs_set_header_parentid(&right->header,
btrfs_header_parentid(btrfs_buffer_header(root->node)));
memcpy(right->header.fsid, root->fs_info->disk_super->fsid,
sizeof(right->header.fsid));
btrfs_cpu_key_to_disk(&disk_key, ins_key);
btrfs_set_header_nritems(&right->header, 0);
wret = insert_ptr(trans, root, path,