Commit 45b87c5d authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: handle btrfs_cow_block errors in replace_path 



If we error out COWing the root node when doing a replace_path then we
simply unlock and free the buffer and return the error.

Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 7a9213a9

fs/btrfs/relocation.c

+10 −2
Original line number Diff line number Diff line
@@ -1231,7 +1231,11 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc, 
	if (cow) {

		ret = btrfs_cow_block(trans, dest, eb, NULL, 0, &eb,

				      BTRFS_NESTING_COW);

		BUG_ON(ret);

		if (ret) {

			btrfs_tree_unlock(eb);

			free_extent_buffer(eb);

			return ret;

		}

	}



	if (next_key) {
@@ -1291,7 +1295,11 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc, 
				ret = btrfs_cow_block(trans, dest, eb, parent,

						      slot, &eb,

						      BTRFS_NESTING_COW);

				BUG_ON(ret);

				if (ret) {

					btrfs_tree_unlock(eb);

					free_extent_buffer(eb);

					break;

				}

			}



			btrfs_tree_unlock(parent);