- user_reserve_kbytes
-When overcommit_memory is set to 2, "never overommit" mode, reserve
+When overcommit_memory is set to 2, "never overcommit" mode, reserve
min(3% of current process size, user_reserve_kbytes) of free memory.
This is intended to prevent a user from starting a single memory hogging
process, such that they cannot recover (kill the hog).