daxctl() — getting the other half of persistent-memory performance
daxctl() — getting the other half of persistent-memory performance
[Kernel] Posted Jun 26, 2017 23:32 UTC (Mon) by corbet
Persistent memory promises high-speed, byte-addressable access to storage, with consequent benefits for all kinds of applications. But realizing those benefits has turned out to present a number of challenges for the Linux kernel community. Persistent memory is neither ordinary memory nor ordinary storage, so traditional approaches to memory and storage are not always well suited to this new world. A proposal for a new daxctl() system call, along with the ensuing discussion, shows how hard it can be to get the most out of persistent memory.