btrfs: handle errors while updating refcounts in update_ref_for_cow

Since commit fb235dc06fa (btrfs: qgroup: Move half of the qgroup
accounting time out of commit trans) the assumption that
btrfs_add_delayed_{data,tree}_ref can only return 0 or -ENOMEM has
been false.  The qgroup operations call into btrfs_search_slot
and friends and can now return the full spectrum of error codes.

Fortunately, the fix here is easy since update_ref_for_cow failing
is already handled so we just need to bail early with the error
code.

Fixes: fb235dc06fa (btrfs: qgroup: Move half of the qgroup accounting ...)
Cc: <[email protected]> # v4.11+
Signed-off-by: Jeff Mahoney <[email protected]>
Reviewed-by: Edmund Nadolski <[email protected]>
Reviewed-by: Qu Wenruo <[email protected]>
Signed-off-by: David Sterba <[email protected]>

0 files changed, 0 insertions, 0 deletions