Disclosed in some examples are methods, systems, and machine readable mediums that dynamically adjust the size of an L2P cache in a memory device in response to observed operational conditions. The L2P cache may borrow memory space from a donor memory location, such as a read or write buffer. For example, if the system notices a high amount of read requests, the system may increase the size of the L2P cache at the expense of the write buffer (which may be decreased). Likewise, if the system notices a high amount of write requests, the system may increase the size of the L2P cache at the expense of the read buffer (which may be decreased).