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btrfs: handle btrfs_update_reloc_root failure in prepare_to_merge

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btrfs_update_reloc_root will will return errors in the future, so handle
an error properly in prepare_to_merge.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2021-03-12 15:25:19 -05:00 committed by David Sterba
parent 7934133fae
commit bbae13f8ab
1 changed files with 12 additions and 1 deletions
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13
fs/btrfs/relocation.c
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@ -1870,10 +1870,21 @@ int prepare_to_merge(struct reloc_control *rc, int err)
*/
if (!err)
btrfs_set_root_refs(&reloc_root->root_item, 1);
btrfs_update_reloc_root(trans, root);
ret = btrfs_update_reloc_root(trans, root);
/*
* Even if we have an error we need this reloc root back on our
* list so we can clean up properly.
*/
list_add(&reloc_root->root_list, &reloc_roots);
btrfs_put_root(root);
if (ret) {
btrfs_abort_transaction(trans, ret);
if (!err)
err = ret;
break;
}
}
list_splice(&reloc_roots, &rc->reloc_roots);