With this patch the user is allowed to (rather specifically) define warning and critical levels for the --tablespace and the --cache check.
You can use percentages (ie. 85%, 95%) and sizes (in M,G,T-Bytes of used space) as well as "negative sizes" (in M,G,T-Bytes below the maximum space available, ie. -2G, -1300M).
Also, this one patches the warn/crit-level implementation of the --cache feature.. you can now specify the ratio percentages up to the fourth digit after the mark (ie. 99.9127% ;-)).