if (btrfs_header_nritems(right) == 0) {
btrfs_clear_buffer_dirty(trans, right);
btrfs_tree_unlock(right);
- btrfs_del_ptr(root, path, level + 1, pslot + 1);
+ ret = btrfs_del_ptr(trans, root, path, level + 1, pslot + 1);
+ if (ret < 0) {
+ free_extent_buffer_stale(right);
+ right = NULL;
+ goto out;
+ }
root_sub_used(root, right->len);
btrfs_free_tree_block(trans, btrfs_root_id(root), right,
0, 1);
if (btrfs_header_nritems(mid) == 0) {
btrfs_clear_buffer_dirty(trans, mid);
btrfs_tree_unlock(mid);
- btrfs_del_ptr(root, path, level + 1, pslot);
+ ret = btrfs_del_ptr(trans, root, path, level + 1, pslot);
+ if (ret < 0) {
+ free_extent_buffer_stale(mid);
+ mid = NULL;
+ goto out;
+ }
root_sub_used(root, mid->len);
btrfs_free_tree_block(trans, btrfs_root_id(root), mid, 0, 1);
free_extent_buffer_stale(mid);
*
* This is exported for use inside btrfs-progs, don't un-export it.
*/
-void btrfs_del_ptr(struct btrfs_root *root, struct btrfs_path *path, int level,
- int slot)
+int btrfs_del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ struct btrfs_path *path, int level, int slot)
{
struct extent_buffer *parent = path->nodes[level];
u32 nritems;
if (level) {
ret = btrfs_tree_mod_log_insert_move(parent, slot,
slot + 1, nritems - slot - 1);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
}
memmove_extent_buffer(parent,
btrfs_node_key_ptr_offset(parent, slot),
} else if (level) {
ret = btrfs_tree_mod_log_insert_key(parent, slot,
BTRFS_MOD_LOG_KEY_REMOVE);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
}
nritems--;
fixup_low_keys(path, &disk_key, level + 1);
}
btrfs_mark_buffer_dirty(parent);
+ return 0;
}
/*
* The path must have already been setup for deleting the leaf, including
* all the proper balancing. path->nodes[1] must be locked.
*/
-static noinline void btrfs_del_leaf(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- struct extent_buffer *leaf)
+static noinline int btrfs_del_leaf(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct extent_buffer *leaf)
{
+ int ret;
+
WARN_ON(btrfs_header_generation(leaf) != trans->transid);
- btrfs_del_ptr(root, path, 1, path->slots[1]);
+ ret = btrfs_del_ptr(trans, root, path, 1, path->slots[1]);
+ if (ret < 0)
+ return ret;
/*
* btrfs_free_extent is expensive, we want to make sure we
atomic_inc(&leaf->refs);
btrfs_free_tree_block(trans, btrfs_root_id(root), leaf, 0, 1);
free_extent_buffer_stale(leaf);
+ return 0;
}
/*
* delete the item at the leaf level in path. If that empties
btrfs_set_header_level(leaf, 0);
} else {
btrfs_clear_buffer_dirty(trans, leaf);
- btrfs_del_leaf(trans, root, path, leaf);
+ ret = btrfs_del_leaf(trans, root, path, leaf);
+ if (ret < 0)
+ return ret;
}
} else {
int used = leaf_space_used(leaf, 0, nritems);
if (btrfs_header_nritems(leaf) == 0) {
path->slots[1] = slot;
- btrfs_del_leaf(trans, root, path, leaf);
+ ret = btrfs_del_leaf(trans, root, path, leaf);
+ if (ret < 0)
+ return ret;
free_extent_buffer(leaf);
ret = 0;
} else {